Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2005 Toyota PriusFACTORY OEM SERVICE PROCEDURE
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODES (DTC) LIST
| DTC | Description |
|---|---|
| DTC P0010 | CAMSHAFT POSITION "A" ACTUATOR CIRCUIT (BANK 1) |
| DTC P0011, P0012 | CAMSHAFT POSITION "A" -TIMING OVER-ADVANCED OR SYSTEM PERFORMANCE/TIMING OVER-RETARDED (BANK 1) |
| DTC P0016 | CRANKSHAFT POSITION - CAMSHAFT POSITION CORRELATION (BANK 1 SENSOR A) |
| DTC P0031, P0032 | OXYGEN (A/F) SENSOR HEATER CONTROL CIRCUIT LOW/HIGH (BANK 1 SENSOR 1) |
| DTC P0037, P0038 | OXYGEN SENSOR HEATER CONTROL CIRCUIT LOW/HIGH (BANK 1 SENSOR 2) |
| DTC P0100, P0102, P0103 | MASS OR VOLUME AIR FLOW CIRCUIT LOW/HIGH INPUT |
| DTC P0101 | MASS OR VOLUME AIR FLOW CIRCUIT RANGE/PERFORMANCE PROBLEM |
| DTC P0110, P0112, P0113 | INTAKE AIR TEMPERATURE CIRCUIT LOW/HIGH INPUT |
| DTC P0115, P0117, P0118 | ENGINE COOLANT TEMPERATURE CIRCUIT LOW/HIGH INPUT |
| DTC P0116 | ENGINE COOLANT TEMPERATURE CIRCUIT RANGE/PERFORMANCE |
| DTC P0120, P0122, P0123, P0220, P0222, P0223, P2135 | THROTTLE/PEDAL POSITION SENSOR/SWITCH "A & B" CIRCUIT LOW/HIGH INPUT & THROTTLE/PEDAL POSITION SENSOR/SWITCH "A & B" VOLTAGE CORRELATION |
| DTC P0121 | THROTTLE/PEDAL POSITION SENSOR/SWITCH "A" CIRCUIT RANGE/PERFORMANCE PROBLEM |
| DTC P0125 | INSUFFICIENT COOLANT TEMPERATURE FOR CLOSED LOOP FUEL CONTROL |
| DTC P0128 | COOLANT THERMOSTAT (COOLANT TEMPERATURE BELOW THERMOSTAT REGULATING TEMPERATURE) |
| DTC P0136, P0137, P0138 | OXYGEN SENSOR CIRCUIT MALFUNCTION LOW/HIGH VOLTAGE (BANK 1 SENSOR 2 |
| DTC P0171, P0172 | SYSTEM TOO LEAN/RICH (BANK 1) |
| DTC P0300, P0301, P0302, P0303, P0304 | RANDOM/MULTIPLE CYLINDER MISFIRE DETECTED & CYLINDER 1-4 MISFIRE DETECTED |
| DTC P0325, P0327, P0328 | KNOCK SENSOR 1 CIRCUIT LOW/HIGH INPUT (BANK 1 OR SINGLE SENSOR) |
| DTC P0335 | CRANKSHAFT POSITION SENSOR "A" CIRCUIT |
| DTC P0340, P0341 | CAMSHAFT POSITION SENSOR "A" CIRCUIT RANGE/PERFORMANCE (BANK 1 OR SINGLE SENSOR) |
| DTC P0351, P0352, P0353, P0354 | IGNITION COIL "A-D" PRIMARY/SECONDARY CIRCUIT |
| DTC P0420 | CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD (BANK 1) |
| DTC P0441, P0446 | EVAPORATIVE EMISSION CONTROL SYSTEM INCORRECT PURGE FLOW/VENT CONTROL CIRCUIT |
| DTC P0442, P0455, P0456 | EVAPORATIVE EMISSION CONTROL SYSTEM LEAK DETECTED (SMALL LEAK/GROSS LEAK/VERY SMALL LEAK) |
| DTC P0451, P0452, P0453 | EVAPORATIVE EMISSION CONTROL SYSTEM PRESSURE SENSOR/SWITCH RANGE/PERFORMANCE LOW/HIGH INPUT |
| DTC P0505 | IDLE AIR CONTROL SYSTEM |
| DTC P0560 | SYSTEM VOLTAGE |
| DTC P0604, P0606, P0607, P0657 | INTERNAL CONTROL MODULE RANDOM ACCESS MEMORY (RAM) ERROR, ECM/PCM PROCESSOR, CONTROL MODULE PERFORMANCE & ACTUATOR SUPPLY VOLTAGE CIRCUIT/OPEN |
| DTC P0630 | VIN NOT PROGRAMMED OR MISMATCH-ECM/PCM |
| DTC P1115, P1117, P1118 | COOLANT TEMPERATURE SENSOR CIRCUIT LOW/HIGH FOR COOLANT HEAT STORAGE SYSTEM |
| DTC P1116 | COOLANT TEMPERATURE SENSOR CIRCUIT STACK FOR COOLANT HEAT STORAGE SYSTEM |
| DTC P1120, P1122, P1123 | COOLANT FLOW CONTROL VALVE POSITION SENSOR CIRCUIT LOW/HIGH |
| DTC P1121 | COOLANT FLOW CONTROL VALVE POSITION SENSOR CIRCUIT STUCK |
| DTC P1150 | COOLANT PATH CLOG UP FOR COOLANT HEAT STORAGE SYSTEM |
| DTC P1151 | COOLANT HEAT STORAGE TANK |
| DTC P1455 | VAPOR REDUCING FUEL TANK SYSTEM MALFUNCTION |
| DTC P2102, P2103 | THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW/HIGH |
| DTC P2111, P2112 | THROTTLE ACTUATOR CONTROL SYSTEM- STUCK OPEN/CLOSED |
| DTC P2118 | THROTTLE ACTUATOR CONTROL MOTOR CURRENT RANGE/PERFORMANCE |
| DTC P2119 | THROTTLE ACTUATOR CONTROL THROTTLE BODY RANGE/PERFORMANCE |
| DTC P2195, P2196 | OXYGEN (A/F) SENSOR SIGNAL STUCK LEAN/RICH (BANK 1 SENSOR 1) |
| DTC P2238, P2239, P2252, P2253 | OXYGEN SENSOR PUMPING CURRENT CIRCUIT LOW/HIGH (FOR A/F SENSOR) (BANK 1 SENSOR 1) & OXYGEN SENSOR REFERENCE GROUND CIRCUIT LOW/HIGH (FOR A/F SENSOR) (BANK 1 SENSOR 1) |
| DTC P2601 | COOLANT PUMP CONTROL CIRCUIT RANGE/PERFORMANCE |
| DTC P2610 | ECM/PCM INTERNAL ENGINE OFF TIMER PERFORMANCE |
| DTC P2A00 | A/F SENSOR CIRCUIT SLOW RESPONSE (BANK 1 SENSOR 1) |
| DTC P3190, P3191, P3193 | POOR ENGINE POWER, ENGINE DOES NOT START & FUEL RUN OUT |
| DTC U0293 | LOST COMMUNICATION WITH HV ECU |
HINT:
Parameters listed in the chart may not be exactly the same as your readings due to the type of instrument or other factors.
If a malfunction code is displayed during the DTC check in check mode, check the circuit for the codes listed in the table below.
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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