Navigating car troubles can be stressful, especially when the check engine light illuminates in your Toyota. Fortunately, modern vehicles like Toyotas are equipped with an On-Board Diagnostics system, specifically OBD2, to help pinpoint potential issues. Understanding Toyota Obd2 Codes is the first step in diagnosing and resolving these problems, saving you time and money on unnecessary repairs.
This guide provides an extensive list of Toyota OBD2 diagnostic trouble codes (DTCs). We’ll break down what these codes mean, differentiate between generic and Toyota-specific codes, and explain how to use this information to troubleshoot your vehicle effectively. Whether you’re a seasoned mechanic or a Toyota owner taking a DIY approach, this resource will help you understand and address toyota obd2 codes.
Understanding OBD2 Systems in Toyota Vehicles
OBD2, or On-Board Diagnostics II, is a standardized system implemented in vehicles sold in the United States from 1996 onwards. It monitors various systems within your car, from the engine and transmission to emissions control, and alerts you to potential malfunctions through the check engine light. When a problem is detected, the system generates a diagnostic trouble code, a standardized alphanumeric code that indicates the nature of the issue.
For Toyota vehicles, understanding OBD2 codes is crucial for effective maintenance and repair. These codes are accessed using an OBD2 scanner, a tool that plugs into your car’s OBD2 port, typically located under the dashboard on the driver’s side.
Toyota OBD2 codes fall into two main categories:
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P0xxx Codes: Generic OBD2 Codes: These are standardized codes used across all vehicle manufacturers. A P0100 code, for example, will mean the same thing for a Toyota as it does for a Ford or Honda – a Mass or Volume Air Flow Circuit Malfunction. These codes cover common powertrain (engine and transmission) and emission-related issues.
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P1xxx Codes: Toyota Specific Codes: These codes are manufacturer-specific and are unique to Toyota vehicles. They often refer to issues within systems that are specific to Toyota’s design or go into more detail than the generic codes. For example, a P1100 code is a Toyota-specific code indicating a Barometric Pressure Sensor Circuit Fault.
Decoding Common Toyota OBD2 Codes
The following is a comprehensive list of OBD2 trouble codes that may appear when diagnosing your Toyota. Remember, while this list provides definitions, accurate diagnosis often requires further investigation, including consulting your Toyota repair manual and using diagnostic tools.
P0000 – P0099: Fuel and Air Metering and Auxiliary Emission Controls
- P0100 Mass or Volume Air Flow Circuit Malfunction
- P0101 Mass or Volume Air Flow Circuit Range/Performance Problem
- P0102 Mass or Volume Air Flow Circuit Low Input
- P0103 Mass or Volume Air Flow Circuit High Input
- P0104 Mass or Volume Air Flow Circuit Intermittent
- P0105 Manifold Absolute Pressure/Barometric Pressure Circuit Malfunction
- P0106 Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem
- P0107 Manifold Absolute Pressure/Barometric Pressure Circuit Low Input
- P0108 Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- P0109 Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent
- P0110 Intake Air Temperature Circuit Malfunction
- P0111 Intake Air Temperature Circuit Range/Performance Problem
- P0112 Intake Air Temperature Circuit Low Input
- P0113 Intake Air Temperature Circuit High Input
- P0114 Intake Air Temperature Circuit Intermittent
- P0115 Engine Coolant Temperature Circuit Malfunction
- P0116 Engine Coolant Temperature Circuit Range/Performance Problem
- P0117 Engine Coolant Temperature Circuit Low Input
- P0118 Engine Coolant Temperature Circuit High Input
- P0119 Engine Coolant Temperature Circuit Intermittent
- P0120 Throttle/Pedal Position Sensor/Switch “A” Circuit Malfunction
- P0121 Throttle/Pedal Position Sensor/Switch “A” Circuit Range/Performance Problem
- P0122 Throttle/Pedal Position Sensor/Switch “A” Circuit Low Input
- P0123 Throttle/Pedal Position Sensor/Switch “A” Circuit High Input
- P0124 Throttle/Pedal Position Sensor/Switch “A” Circuit Intermittent
- P0125 Insufficient Coolant Temperature For Closed Loop Fuel Control
- P0126 Insufficient Coolant Temperature For Stable Operation
- P0130 O2 Circuit Malfunction (Bank 1 Sensor 1)
- P0131 O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)
- P0132 O2 Sensor Circuit High Voltage (Bank 1 Sensor 1)
- P0133 O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)
- P0134 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)
- P0135 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
- P0136 O2 Sensor Circuit Malfunction (Bank 1 Sensor 2)
- P0137 O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)
- P0138 O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)
- P0139 O2 Sensor Circuit Slow Response (Bank 1 Sensor 2)
- P0140 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)
- P0141 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
- P0142 O2 Sensor Circuit Malfunction (Bank 1 Sensor 3)
- P0143 O2 Sensor Circuit Low Voltage (Bank 1 Sensor 3)
- P0144 O2 Sensor Circuit High Voltage (Bank 1 Sensor 3)
- P0145 O2 Sensor Circuit Slow Response (Bank 1 Sensor 3)
- P0146 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 3)
- P0147 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 3)
- P0150 O2 Sensor Circuit Malfunction (Bank 2 Sensor 1)
- P0151 O2 Sensor Circuit Low Voltage (Bank 2 Sensor 1)
- P0152 O2 Sensor Circuit High Voltage (Bank 2 Sensor 1)
- P0153 O2 Sensor Circuit Slow Response (Bank 2 Sensor 1)
- P0154 O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1)
- P0155 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)
- P0156 O2 Sensor Circuit Malfunction (Bank 2 Sensor 2)
- P0157 O2 Sensor Circuit Low Voltage (Bank 2 Sensor 2)
- P0158 O2 Sensor Circuit High Voltage (Bank 2 Sensor 2)
- P0159 O2 Sensor Circuit Slow Response (Bank 2 Sensor 2)
- P0160 O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 2)
- P0161 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)
- P0162 O2 Sensor Circuit Malfunction (Bank 2 Sensor 3)
- P0163 O2 Sensor Circuit Low Voltage (Bank 2 Sensor 3)
- P0164 O2 Sensor Circuit High Voltage (Bank 2 Sensor 3)
- P0165 O2 Sensor Circuit Slow Response (Bank 2 Sensor 3)
- P0166 O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 3)
- P0167 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 3)
- P0170 Fuel Trim Malfunction (Bank 1)
- P0171 System Too Lean (Bank 1)
- P0172 System Too Rich (Bank 1)
- P0173 Fuel Trim Malfunction (Bank 2)
- P0174 System Too Lean (Bank 2)
- P0175 System Too Rich (Bank 2)
- P0176 Fuel Composition Sensor Circuit Malfunction
- P0177 Fuel Composition Sensor Circuit Range/Performance
- P0178 Fuel Composition Sensor Circuit Low Input
- P0179 Fuel Composition Sensor Circuit High Input
- P0180 Fuel Temperature Sensor “A” Circuit Malfunction
- P0181 Fuel Temperature Sensor “A” Circuit Range/Performance
- P0182 Fuel Temperature Sensor “A” Circuit Low Input
- P0183 Fuel Temperature Sensor “A” Circuit High Input
- P0184 Fuel Temperature Sensor “A” Circuit Intermittent
- P0185 Fuel Temperature Sensor “B” Circuit Malfunction
- P0186 Fuel Temperature Sensor “B” Circuit Range/Performance
- P0187 Fuel Temperature Sensor “B” Circuit Low Input
- P0188 Fuel Temperature Sensor “B” Circuit High Input
- P0189 Fuel Temperature Sensor “B” Circuit Intermittent
- P0190 Fuel Rail Pressure Sensor Circuit Malfunction
- P0191 Fuel Rail Pressure Sensor Circuit Range/Performance
- P0192 Fuel Rail Pressure Sensor Circuit Low Input
- P0193 Fuel Rail Pressure Sensor Circuit High Input
- P0194 Fuel Rail Pressure Sensor Circuit Intermittent
- P0195 Engine Oil Temperature Sensor Malfunction
- P0196 Engine Oil Temperature Sensor Range/Performance
- P0197 Engine Oil Temperature Sensor Low
- P0198 Engine Oil Temperature Sensor High
- P0199 Engine Oil Temperature Sensor Intermittent
P0200 – P0299: Injector Circuit and Misfire Detection
- P0200 Injector Circuit Malfunction
- P0201 Injector Circuit Malfunction — Cylinder #1
- P0202 Injector Circuit Malfunction — Cylinder #2
- P0203 Injector Circuit Malfunction — Cylinder #3
- P0204 Injector Circuit Malfunction — Cylinder #4
- P0205 Injector Circuit Malfunction — Cylinder #5
- P0206 Injector Circuit Malfunction — Cylinder #6
- P0207 Injector Circuit Malfunction — Cylinder #7
- P0208 Injector Circuit Malfunction — Cylinder #8
- P0209 Injector Circuit Malfunction — Cylinder #9
- P0210 Injector Circuit Malfunction — Cylinder #10
- P0211 Injector Circuit Malfunction — Cylinder #11
- P0212 Injector Circuit Malfunction — Cylinder #12
- P0213 Cold Start Injector #1 Malfunction
- P0214 Cold Start Injector #2 Malfunction
- P0215 Engine Shutoff Solenoid Malfunction
- P0216 Injection Timing Control Circuit Malfunction
- P0217 Engine Over Temperature Condition
- P0218 Transmission Over Temperature Condition
- P0219 Engine Over Speed Condition
- P0220 Throttle/Pedal Position Sensor/Switch “B” Circuit Malfunction
- P0221 Throttle/Pedal Position Sensor/Switch “B” Circuit Range/Performance Problem
- P0222 Throttle/Pedal Position Sensor/Switch “B” Circuit Low Input
- P0223 Throttle/Pedal Position Sensor/Switch “B” Circuit High Input
- P0224 Throttle/Pedal Position Sensor/Switch “B” Circuit Intermittent
- P0225 Throttle/Pedal Position Sensor/Switch “C” Circuit Malfunction
- P0226 Throttle/Pedal Position Sensor/Switch “C” Circuit Range/Performance Problem
- P0227 Throttle/Pedal Position Sensor/Switch “C” Circuit Low Input
- P0228 Throttle/Pedal Position Sensor/Switch “C” Circuit High Input
- P0229 Throttle/Pedal Position Sensor/Switch “C” Circuit Intermittent
- P0230 Fuel Pump Primary Circuit Malfunction
- P0231 Fuel Pump Secondary Circuit Low
- P0232 Fuel Pump Secondary Circuit High
- P0233 Fuel Pump Secondary Circuit Intermittent
- P0234 Engine Over Boost Condition
- P0261 Cylinder #1 Injector Circuit Low
- P0262 Cylinder #1 Injector Circuit High
- P0263 Cylinder #1 Contribution/Balance Fault
- P0264 Cylinder #2 Injector Circuit Low
- P0265 Cylinder #2 Injector Circuit High
- P0266 Cylinder #2 Contribution/Balance Fault
- P0267 Cylinder #3 Injector Circuit Low
- P0268 Cylinder #3 Injector Circuit High
- P0269 Cylinder #3 Contribution/Balance Fault
- P0270 Cylinder #4 Injector Circuit Low
- P0271 Cylinder #4 Injector Circuit High
- P0272 Cylinder #4 Contribution/Balance Fault
- P0273 Cylinder #5 Injector Circuit Low
- P0274 Cylinder #5 Injector Circuit High
- P0275 Cylinder #5 Contribution/Balance Fault
- P0276 Cylinder #6 Injector Circuit Low
- P0277 Cylinder #6 Injector Circuit High
- P0278 Cylinder #6 Contribution/Balance Fault
- P0279 Cylinder #7 Injector Circuit Low
- P0280 Cylinder #7 Injector Circuit High
- P0281 Cylinder #7 Contribution/Balance Fault
- P0282 Cylinder #8 Injector Circuit Low
- P0283 Cylinder #8 Injector Circuit High
- P0284 Cylinder #8 Contribution/Balance Fault
- P0285 Cylinder #9 Injector Circuit Low
- P0286 Cylinder #9 Injector Circuit High
- P0287 Cylinder #9 Contribution/Balance Fault
- P0288 Cylinder #10 Injector Circuit Low
- P0289 Cylinder #10 Injector Circuit High
- P0290 Cylinder #10 Contribution/Balance Fault
- P0291 Cylinder #11 Injector Circuit Low
- P0292 Cylinder #11 Injector Circuit High
- P0293 Cylinder #11 Contribution/Balance Fault
- P0294 Cylinder #12 Injector Circuit Low
- P0295 Cylinder #12 Injector Circuit High
- P0296 Cylinder #12 Contribution/Balance Fault
- P0300 Random/Multiple Cylinder Misfire Detected
- P0301 Cylinder #1 — Misfire Detected
- P0302 Cylinder #2 — Misfire Detected
- P0303 Cylinder #3 — Misfire Detected
- P0304 Cylinder #4 — Misfire Detected
- P0305 Cylinder #5 — Misfire Detected
- P0306 Cylinder #6 — Misfire Detected
- P0307 Cylinder #7 — Misfire Detected
- P0308 Cylinder #8 — Misfire Detected
P0309 – P0399: Ignition System or Misfire
- P0320 Ignition/Distributor Engine Speed Input Circuit Malfunction
- P0321 Ignition/Distributor Engine Speed Input Circuit Range/Performance
- P0322 Ignition/Distributor Engine Speed Input Circuit No Signal
- P0323 Ignition/Distributor Engine Speed Input Circuit Intermittent
- P0325 Knock Sensor #1 — Circuit Malfunction (Bank 1 or Single Sensor)
- P0326 Knock Sensor #1 — Circuit Range/Performance (Bank 1 or Single Sensor)
- P0327 Knock Sensor #1 — Circuit Low Input (Bank 1 or Single Sensor)
- P0328 Knock Sensor #1 — Circuit High Input (Bank 1 or Single Sensor)
- P0329 Knock Sensor #1 — Circuit Input Intermittent (Bank 1 or Single Sensor)
- P0330 Knock Sensor #2 — Circuit Malfunction (Bank 2)
- P0331 Knock Sensor #2 — Circuit Range/Performance (Bank 2)
- P0332 Knock Sensor #2 — Circuit Low Input (Bank 2)
- P0333 Knock Sensor #2 — Circuit High Input (Bank 2)
- P0334 Knock Sensor #2 — Circuit Input Intermittent (Bank 2)
- P0335 Crankshaft Position Sensor “A” Circuit Malfunction
- P0336 Crankshaft Position Sensor “A” Circuit Range/Performance
- P0337 Crankshaft Position Sensor “A” Circuit Low Input
- P0338 Crankshaft Position Sensor “A” Circuit High Input
- P0339 Crankshaft Position Sensor “A” Circuit Intermittent
- P0340 Camshaft Position Sensor Circuit Malfunction
- P0341 Camshaft Position Sensor Circuit Range/Performance
- P0342 Camshaft Position Sensor Circuit Low Input
- P0343 Camshaft Position Sensor Circuit High Input
- P0344 Camshaft Position Sensor Circuit Intermittent
- P0350 Ignition Coil Primary/Secondary Circuit Malfunction
- P0351 Ignition Coil “A” Primary/Secondary Circuit Malfunction
- P0352 Ignition Coil “B” Primary/Secondary Circuit Malfunction
- P0353 Ignition Coil “C” Primary/Secondary Circuit Malfunction
- P0354 Ignition Coil “D” Primary/Secondary Circuit Malfunction
- P0355 Ignition Coil “E” Primary/Secondary Circuit Malfunction
- P0356 Ignition Coil “F” Primary/Secondary Circuit Malfunction
- P0357 Ignition Coil “G” Primary/Secondary Circuit Malfunction
- P0358 Ignition Coil “H” Primary/Secondary Circuit Malfunction
- P0359 Ignition Coil “I” Primary/Secondary Circuit Malfunction
- P0360 Ignition Coil “J” Primary/Secondary Circuit Malfunction
- P0361 Ignition Coil “K” Primary/Secondary Circuit Malfunction
- P0362 Ignition Coil “L” Primary/Secondary Circuit Malfunction
- P0370 Timing Reference High Resolution Signal “A” Malfunction
- P0371 Timing Reference High Resolution Signal “A” Too Many Pulses
- P0372 Timing Reference High Resolution Signal “A” Too Few Pulses
- P0373 Timing Reference High Resolution Signal “A” Intermittent/Erratic Pulses
- P0374 Timing Reference High Resolution Signal “A” No Pulses
- P0375 Timing Reference High Resolution Signal “B” Malfunction
- P0376 Timing Reference High Resolution Signal “B” Too Many Pulses
- P0377 Timing Reference High Resolution Signal “B” Too Few Pulses
- P0378 Timing Reference High Resolution Signal “B” Intermittent/Erratic Pulses
- P0379 Timing Reference High Resolution Signal “B” No Pulses
- P0380 Glow Plug/Heater Circuit “A” Malfunction
- P0381 Glow Plug/Heater Indicator Circuit Malfunction
- P0382 Glow Plug/Heater Circuit “B” Malfunction
- P0385 Crankshaft Position Sensor “B” Circuit Malfunction
- P0386 Crankshaft Position Sensor “B” Circuit Range/Performance
- P0387 Crankshaft Position Sensor “B” Circuit Low Input
- P0388 Crankshaft Position Sensor “B” Circuit High Input
- P0389 Crankshaft Position Sensor “B” Circuit Intermittent
P0400 – P0499: Auxiliary Emission Controls
- P0400 Exhaust Gas Recirculation Flow Malfunction
- P0401 Exhaust Gas Recirculation Flow Insufficient Detected
- P0402 Exhaust Gas Recirculation Flow Excessive Detected
- P0403 Exhaust Gas Recirculation Circuit Malfunction
- P0404 Exhaust Gas Recirculation Circuit Range/Performance
- P0405 Exhaust Gas Recirculation Sensor “A” Circuit Low
- P0406 Exhaust Gas Recirculation Sensor “A” Circuit High
- P0407 Exhaust Gas Recirculation Sensor “B” Circuit Low
- P0408 Exhaust Gas Recirculation Sensor “B” Circuit High
- P0410 Secondary Air Injection System Malfunction
- P0411 Secondary Air Injection System Incorrect Flow Detected
- P0412 Secondary Air Injection System Switching Valve “A” Circuit Malfunction
- P0413 Secondary Air Injection System Switching Valve “A” Circuit Open
- P0414 Secondary Air Injection System Switching Valve “A” Circuit Shorted
- P0415 Secondary Air Injection System Switching Valve “B” Circuit Malfunction
- P0416 Secondary Air Injection System Switching Valve “B” Circuit Open
- P0417 Secondary Air Injection System Switching Valve “B” Circuit Shorted
- P0418 Secondary Air Injection System Relay “A” Circuit Malfunction
- P0419 Secondary Air Injection System Relay “B” Circuit Malfunction
- P0420 Catalyst System Efficiency Below Threshold (Bank 1)
- P0421 Warm Up Catalyst Efficiency Below Threshold (Bank 1)
- P0422 Main Catalyst Efficiency Below Threshold (Bank 1)
- P0423 Heated Catalyst Efficiency Below Threshold (Bank 1)
- P0424 Heated Catalyst Temperature Below Threshold (Bank 1)
- P0430 Catalyst System Efficiency Below Threshold (Bank 2)
- P0431 Warm Up Catalyst Efficiency Below Threshold (Bank 2)
- P0432 Main Catalyst Efficiency Below Threshold (Bank 2)
- P0433 Heated Catalyst Efficiency Below Threshold (Bank 2)
- P0434 Heated Catalyst Temperature Below Threshold (Bank 2)
- P0440 Evaporative Emission Control System Malfunction
- P0441 Evaporative Emission Control System Incorrect Purge Flow
- P0442 Evaporative Emission Control System Leak Detected (Small Leak)
- P0443 Evaporative Emission Control System Purge Control Valve Circuit Malfunction
- P0444 Evaporative Emission Control System Purge Control Valve Circuit Open
- P0445 Evaporative Emission Control System Purge Control Valve Circuit Shorted
- P0446 Evaporative Emission Control System Vent Control Circuit Malfunction
- P0447 Evaporative Emission Control System Vent Control Circuit Open
- P0448 Evaporative Emission Control System Vent Control Circuit Shorted
- P0449 Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction
- P0450 Evaporative Emission Control System Pressure Sensor Malfunction
- P0451 Evaporative Emission Control System Pressure Sensor Range/Performance
- P0452 Evaporative Emission Control System Pressure Sensor Low Input
- P0453 Evaporative Emission Control System Pressure Sensor High Input
- P0454 Evaporative Emission Control System Pressure Sensor Intermittent
- P0455 Evaporative Emission Control System Leak Detected (Gross Leak)
- P0460 Fuel Level Sensor Circuit Malfunction
- P0461 Fuel Level Sensor Circuit Range/Performance
- P0462 Fuel Level Sensor Circuit Low Input
- P0463 Fuel Level Sensor Circuit High Input
- P0464 Fuel Level Sensor Circuit Intermittent
- P0465 Purge Flow Sensor Circuit Malfunction
- P0466 Purge Flow Sensor Circuit Range/Performance
- P0467 Purge Flow Sensor Circuit Low Input
- P0468 Purge Flow Sensor Circuit High Input
- P0469 Purge Flow Sensor Circuit Intermittent
- P0470 Exhaust Pressure Sensor Malfunction
- P0471 Exhaust Pressure Sensor Range/Performance
- P0472 Exhaust Pressure Sensor Low
- P0473 Exhaust Pressure Sensor High
- P0474 Exhaust Pressure Sensor Intermittent
- P0475 Exhaust Pressure Control Valve Malfunction
- P0476 Exhaust Pressure Control Valve Range/Performance
- P0477 Exhaust Pressure Control Valve Low
- P0478 Exhaust Pressure Control Valve High
- P0479 Exhaust Pressure Control Valve Intermittent
- P0480 Cooling Fan #1 Control Circuit Malfunction
- P0481 Cooling Fan #2 Control Circuit Malfunction
- P0482 Cooling Fan #3 Control Circuit Malfunction
- P0483 Cooling Fan Rationality Check Malfunction
- P0484 Cooling Fan Circuit Over Current
- P0485 Cooling Fan Power/Ground Circuit Malfunction
P0500 – P0599: Vehicle Speed, Idle Control, and Auxiliary Inputs
- P0500 Vehicle Speed Sensor Malfunction
- P0501 Vehicle Speed Sensor Range/Performance
- P0502 Vehicle Speed Sensor Circuit Low Input
- P0503 Vehicle Speed Sensor Intermittent/Erratic/High
- P0505 Idle Control System Malfunction
- P0506 Idle Control System RPM Lower Than Expected
- P0507 Idle Control System RPM Higher Than Expected
- P0510 Closed Throttle Position Switch Malfunction
- P0520 Engine Oil Pressure Sensor/Switch Circuit Malfunction
- P0521 Engine Oil Pressure Sensor/Switch Range/Performance
- P0522 Engine Oil Pressure Sensor/Switch Low Voltage
- P0523 Engine Oil Pressure Sensor/Switch High Voltage
- P0530 A/C Refrigerant Pressure Sensor Circuit Malfunction
- P0531 A/C Refrigerant Pressure Sensor Circuit Range/Performance
- P0532 A/C Refrigerant Pressure Sensor Circuit Low Input
- P0533 A/C Refrigerant Pressure Sensor Circuit High Input
- P0534 A/C Refrigerant Charge Loss
- P0550 Power Steering Pressure Sensor Circuit Malfunction
- P0551 Power Steering Pressure Sensor Circuit Range/Performance
- P0552 Power Steering Pressure Sensor Circuit Low Input
- P0553 Power Steering Pressure Sensor Circuit High Input
- P0554 Power Steering Pressure Sensor Circuit Intermittent
- P0560 System Voltage Malfunction
- P0561 System Voltage Unstable
- P0562 System Voltage Low
- P0563 System Voltage High
- P0565 Cruise Control On Signal Malfunction
- P0566 Cruise Control Off Signal Malfunction
- P0567 Cruise Control Resume Signal Malfunction
- P0568 Cruise Control Set Signal Malfunction
- P0569 Cruise Control Coast Signal Malfunction
- P0570 Cruise Control Accel Signal Malfunction
- P0571 Cruise Control/Brake Switch “A” Circuit Malfunction
- P0572 Cruise Control/Brake Switch “A” Circuit Low
- P0573 Cruise Control/Brake Switch “A” Circuit High
- P0574 Through P0580 Reserved for Cruise Codes
P0600 – P0699: Computer Output Circuit Monitoring
- P0600 Serial Communication Link Malfunction
- P0601 Internal Control Module Memory Check Sum Error
- P0602 Control Module Programming Error
- P0603 Internal Control Module Keep Alive Memory (KAM) Error
- P0604 Internal Control Module Random Access Memory (RAM) Error
- P0605 Internal Control Module Read Only Memory (ROM) Error
- P0606 PCM Processor Fault
- P0608 Control Module VSS Output “A” Malfunction
- P0609 Control Module VSS Output “B” Malfunction
- P0620 Generator Control Circuit Malfunction
- P0621 Generator Lamp “L” Control Circuit Malfunction
- P0622 Generator Field “F” Control Circuit Malfunction
- P0650 Malfunction Indicator Lamp (MIL) Control Circuit Malfunction
- P0654 Engine RPM Output Circuit Malfunction
- P0655 Engine Hot Lamp Output Control Circuit Malfunction
- P0656 Fuel Level Output Circuit Malfunction
P0700 – P0799: Transmission
- P0700 Transmission Control System Malfunction
- P0701 Transmission Control System Range/Performance
- P0702 Transmission Control System Electrical
- P0703 Torque Converter/Brake Switch “B” Circuit Malfunction
- P0704 Clutch Switch Input Circuit Malfunction
- P0705 Transmission Range Sensor Circuit Malfunction (PRNDL Input)
- P0706 Transmission Range Sensor Circuit Range/Performance
- P0707 Transmission Range Sensor Circuit Low Input
- P0708 Transmission Range Sensor Circuit High Input
- P0709 Transmission Range Sensor Circuit Intermittent
- P0710 Transmission Fluid Temperature Sensor Circuit Malfunction
- P0711 Transmission Fluid Temperature Sensor Circuit Range/Performance
- P0712 Transmission Fluid Temperature Sensor Circuit Low Input
- P0713 Transmission Fluid Temperature Sensor Circuit High Input
- P0714 Transmission Fluid Temperature Sensor Circuit Intermittent
- P0715 Input/Turbine Speed Sensor Circuit Malfunction
- P0716 Input/Turbine Speed Sensor Circuit Range/Performance
- P0717 Input/Turbine Speed Sensor Circuit No Signal
- P0718 Input/Turbine Speed Sensor Circuit Intermittent
- P0719 Torque Converter/Brake Switch “B” Circuit Low
- P0720 Output Speed Sensor Circuit Malfunction
- P0721 Output Speed Sensor Circuit Range/Performance
- P0722 Output Speed Sensor Circuit No Signal
- P0723 Output Speed Sensor Circuit Intermittent
- P0724 Torque Converter/Brake Switch “B” Circuit High
- P0725 Engine Speed Input Circuit Malfunction
- P0726 Engine Speed Input Circuit Range/Performance
- P0727 Engine Speed Input Circuit No Signal
- P0728 Engine Speed Input Circuit Intermittent
- P0730 Incorrect Gear Ratio
- P0731 Gear 1 Incorrect Ratio
- P0732 Gear 2 Incorrect Ratio
- P0733 Gear 3 Incorrect Ratio
- P0734 Gear 4 Incorrect Ratio
- P0735 Gear 5 Incorrect Ratio
- P0736 Reverse Incorrect Ratio
- P0740 Torque Converter Clutch Circuit Malfunction
- P0741 Torque Converter Clutch Circuit Performance or Stuck Off
- P0742 Torque Converter Clutch Circuit Stuck On
- P0743 Torque Converter Clutch Circuit Electrical
- P0744 Torque Converter Clutch Circuit Intermittent
- P0745 Pressure Control Solenoid Malfunction
- P0746 Pressure Control Solenoid Performance or Stuck Off
- P0747 Pressure Control Solenoid Stuck On
- P0748 Pressure Control Solenoid Electrical
- P0749 Pressure Control Solenoid Intermittent
- P0750 Shift Solenoid “A” Malfunction
- P0751 Shift Solenoid “A” Performance or Stuck Off
- P0752 Shift Solenoid “A” Stuck On
- P0753 Shift Solenoid “A” Electrical
- P0754 Shift Solenoid “A” Intermittent
- P0755 Shift Solenoid “B” Malfunction
- P0756 Shift Solenoid “B” Performance or Stuck Off
- P0757 Shift Solenoid “B” Stuck On
- P0758 Shift Solenoid “B” Electrical
- P0759 Shift Solenoid “B” Intermittent
- P0760 Shift Solenoid “C” Malfunction
- P0761 Shift Solenoid “C” Performance Or Stuck Off
- P0762 Shift Solenoid “C” Stuck On
- P0763 Shift Solenoid “C” Electrical
- P0764 Shift Solenoid “C” Intermittent
- P0765 Shift Solenoid “D” Malfunction
- P0766 Shift Solenoid “D” Performance Or Stuck Off
- P0767 Shift Solenoid “D” Stuck On
- P0768 Shift Solenoid “D” Electrical
- P0769 Shift Solenoid “D” Intermittent
- P0770 Shift Solenoid “E” Malfunction
- P0771 Shift Solenoid “E” Performance Or Stuck Off
- P0772 Shift Solenoid “E” Stuck On
- P0773 Shift Solenoid “E” Electrical
- P0774 Shift Solenoid “E” Intermittent
- P0780 Shift Malfunction
- P0781 1-2 Shift Malfunction
- P0782 2-3 Shift Malfunction
- P0783 3-4 Shift Malfunction
- P0784 4-5 Shift Malfunction
- P0785 Shift/Timing Solenoid Malfunction
- P0786 Shift/Timing Solenoid Range/Performance
- P0787 Shift/Timing Solenoid Low
- P0788 Shift/Timing Solenoid High
- P0789 Shift/Timing Solenoid Intermittent
- P0790 Normal/Performance Switch Circuit Malfunction
P0800 – P0999: Speed Control and Auxiliary Inputs
- P0801 Reverse Inhibit Control Circuit Malfunction
- P0803 1-4 Upshift (Skip Shift) Solenoid Control Circuit Malfunction
- P0804 1-4 Upshift (Skip Shift) Lamp Control Circuit Malfunction
P1000 – P1999: Toyota Specific Codes
- P1100 Barometric Pressure Sensor Circuit Fault
- P1120 Accelerator Pedal Position Sensor Circuit Malfunction
- P1121 Accelerator Pedal Position Sensor Range/Performance Problem
- P1125 Throttle Control Motor Circuit Malfunction
- P1126 Magnetic Clutch Circuit Malfunction
- P1127 ETCS Actuator Power Source Circuit Malfunction
- P1128 Throttle Control Motor Lock Malfunction
- P1129 Electric Throttle Control System Malfunction
- P1130 A/F Sensor Circuit Range / Performance Malfunction (Bank 1 Sensor 1)
- P1133 A/F Sensor Circuit Response Malfunction (Bank 1 Sensor 1)
- P1135 A/F Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
- P1150 A/F Sensor Circuit Range / Performance Malfunction (Bank 2 Sensor 1)
- P1153 A/F Sensor Circuit Response Malfunction (Bank 2 Sensor 1)
- P1155 A/F Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)
- P1200 Fuel Pump Relay Circuit Fault
- P1300 Igniter Circuit Fault (Bank 1)
- P1305 Igniter Circuit Fault (Bank 2)
- P1310 Igniter Circuit Fault (Bank 3)
- P1315 Igniter Circuit Fault (Bank 4)
- P1320 Igniter Circuit Fault (Bank 5)
- P1325 Igniter Circuit Fault (Bank 6)
- P1330 Igniter Circuit Fault (Bank 7)
- P1335 Crankshaft Position Sensor Circuit Fault (during engine running)
- P1340 Igniter Circuit Fault (Bank 8)
- P1400 Sub-Throttle Position Sensor Circuit Fault
- P1401 Sub-Throttle Position Sensor Performance
- P1500 Starter Signal Circuit Fault
- P1510 Air Volume Too Low With Supercharger On
- P1520 Stop Light Switch Signal Malfunction
- P1600 ECM Battery Back-up Circuit Fault
- P1633 ECM Malfunction (ETCS Circuit)
- P1605 Knock Control CPU Fault
- P1700 Vehicle Speed Sensor Circuit Fault
- P1705 Direct Clutch Speed Sensor Circuit Fault
- P1765 Linear Shift Solenoid Circuit Fault
- P1780 Park Neutral Position Switch Fault
How to Use Toyota OBD2 Codes for Diagnosis
Once you have retrieved a toyota obd2 code using a scanner, follow these steps for effective diagnosis:
- Record the Code: Write down the exact code. Sometimes, there might be multiple codes, so note them all.
- Understand the Code: Use this guide or a reliable online OBD2 resource to understand the general meaning of the code. Pay attention to whether it’s a generic (P0xxx) or Toyota-specific (P1xxx) code.
- Research Toyota Specific Information: For P1xxx codes, specifically search online for “Toyota P1xxx code” to find Toyota-specific interpretations and troubleshooting steps. Toyota repair manuals or online Toyota technician forums can be invaluable resources.
- Visual Inspection: Before replacing any parts, perform a visual inspection of the related system. For example, if you have a code related to the Mass Air Flow (MAF) sensor (P0100 series), check the MAF sensor connector, wiring, and the sensor itself for any obvious damage or disconnection.
- Further Testing: Based on the code and your visual inspection, you may need to perform further tests. This could involve using a multimeter to check sensor voltages or resistances, or using the scan tool to monitor live data from sensors.
- Clear the Code and Retest: After addressing the suspected issue, clear the OBD2 code using your scanner. Then, drive your Toyota to see if the check engine light comes back on and if the code returns. If the code reappears, further diagnosis is needed.
- Seek Professional Help: If you are uncomfortable with diagnosing or repairing the issue yourself, or if the problem persists after your attempts, it’s always best to consult a qualified mechanic, especially one experienced with Toyota vehicles.
Conclusion
Understanding Toyota OBD2 codes empowers you to take a proactive approach to vehicle maintenance and repair. While this list provides a comprehensive reference, remember that it’s a starting point. Effective diagnosis requires a systematic approach, combining code interpretation with visual inspections and, when necessary, professional expertise. By utilizing this guide, you can better understand your Toyota’s diagnostic system and work towards keeping your vehicle running smoothly and efficiently.
