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.
2012 Toyota Prius TwoFACTORY OEM SERVICE PROCEDURE
Hybrid Control System
HYBRID CONTROL SYSTEM DTC IDENTIFICATION
| DTC Code | Description |
|---|---|
| P0069-273 | Manifold Absolute Pressure - Barometric Pressure Correlation |
| P0340-886 | Camshaft Position Sensor "A" Circuit |
| P0343-747 | Camshaft Position Sensor "A" Circuit High Input |
| P0516-769 | Battery Temperature Sensor Circuit Low |
| P0517-770 | Battery Temperature Sensor Circuit High |
| P060B-134 | Internal Control Module A/D Processing Performance |
| P060B-135 | Internal Control Module A/D Processing Performance |
| P060B-570 | Internal Control Module A/D Processing Performance |
| P062F-143 | Internal Control Module EEPROM Error |
| P062F-165 | Internal Control Module EEPROM Error |
| P06A4-209 | Sensor Reference Voltage "D" Circuit Low |
| P06A5-210 | Sensor Reference Voltage "D" Circuit High |
| P082B-575 | Gear Lever X Position Circuit Low |
| P082C-576 | Gear Lever X Position Circuit High |
| P082E-571 | Gear Lever Y Position Circuit Low |
| P082F-572 | Gear Lever Y Position Circuit High |
| P0851-579 | Park / Neutral Switch Input Circuit Low |
| P0852-580 | Park / Neutral Switch Input Circuit High |
| P085D-582 | Gear Shift Control Module "A" Performance |
| P085D-599 | Gear Shift Control Module "A" Performance |
| P0861-597 | Gear Shift Control Module "A" Communication Circuit Low |
| P0862-598 | Gear Shift Control Module "A" Communication Circuit High |
| P0A01-726 | Motor Electronics Coolant Temperature Sensor Circuit Range / Performance |
| P0A02-719 | Motor Electronics Coolant Temperature Sensor Circuit Low |
| P0A03-720 | Motor Electronics Coolant Temperature Sensor Circuit High |
| P0A04-725 | Motor Electronics Coolant Temperature Sensor Circuit Intermittent |
| P0A08-264 | DC / DC Converter Status Circuit |
| P0A09-265 | DC / DC Converter Status Circuit Low Input |
| P0A09-591 | DC / DC Converter Status Circuit Low Input |
| P0A0D-350 | High Voltage System Inter-Lock Circuit High |
| P0A0D-351 | High Voltage System Inter-Lock Circuit High |
| P0A0F-204 | Engine Failed to Start |
| P0A0F-205 | Engine Failed to Start |
| P0A0F-206 | Engine Failed to Start |
| P0A0F-238 | Engine Failed to Start |
| P0A0F-524 | Engine Failed to Start |
| P0A0F-525 | Engine Failed to Start |
| P0A10-263 | DC / DC Converter Status Circuit High Input |
| P0A10-592 | DC / DC Converter Status Circuit High Input |
| P0A1A-151 | Generator Control Module |
| P0A1A-155 | Generator Control Module |
| P0A1A-156 | Generator Control Module |
| P0A1A-166 | Generator Control Module |
| P0A1A-200 | Generator Control Module |
| P0A1A-658 | Generator Control Module |
| P0A1A-659 | Generator Control Module |
| P0A1A-791 | Generator Control Module |
| P0A1A-792 | Generator Control Module |
| P0A1A-793 | Generator Control Module |
| P0A1B-163 | Drive Motor "A" Control Module |
| P0A1B-164 | Drive Motor "A" Control Module |
| P0A1B-168 | Drive Motor "A" Control Module |
| P0A1B-192 | Drive Motor "A" Control Module |
| P0A1B-193 | Drive Motor "A" Control Module |
| P0A1B-198 | Drive Motor "A" Control Module |
| P0A1B-511 | Drive Motor "A" Control Module |
| P0A1B-512 | Drive Motor "A" Control Module |
| P0A1B-661 | Drive Motor "A" Control Module |
| P0A1B-786 | Drive Motor "A" Control Module |
| P0A1B-794 | Drive Motor "A" Control Module |
| P0A1B-795 | Drive Motor "A" Control Module |
| P0A1B-796 | Drive Motor "A" Control Module |
| P0A1D-144 | Hybrid Powertrain Control Module |
| P0A1D-148 | Hybrid Powertrain Control Module |
| P0A1D-162 | Hybrid Powertrain Control Module |
| P0A1D-187 | Hybrid Powertrain Control Module |
| P0A1D-721 | Hybrid Powertrain Control Module |
| P0A1D-722 | Hybrid Powertrain Control Module |
| P0A1D-723 | Hybrid Powertrain Control Module |
| P0A1D-787 | Hybrid Powertrain Control Module |
| P0A1D-818 | Hybrid Powertrain Control Module |
| P0A1D-821 | Hybrid Powertrain Control Module |
| P0A1D-822 | Hybrid Powertrain Control Module |
| P0A1D-823 | Hybrid Powertrain Control Module |
| P0A2B-250 | Drive Motor "A" Temperature Sensor Circuit Range / Performance |
| P0A2C-247 | Drive Motor "A" Temperature Sensor Circuit Low |
| P0A2D-249 | Drive Motor "A" Temperature Sensor Circuit High |
| P0A2E-248 | Drive Motor "A" Temperature Sensor Circuit Intermittent |
| P0A37-260 | Generator Temperature Sensor Circuit Range / Performance |
| P0A38-257 | Generator Temperature Sensor Circuit Low |
| P0A39-259 | Generator Temperature Sensor Circuit High |
| P0A3A-258 | Generator Temperature Sensor Circuit Intermittent |
| P0A3F-243 | Drive Motor "A" Position Sensor Circuit |
| P0A40-500 | Drive Motor "A" Position Sensor Circuit Range / Performance |
| P0A41-245 | Drive Motor "A" Position Sensor Circuit Low |
| P0A4B-253 | Generator Position Sensor Circuit |
| P0A4C-513 | Generator Position Sensor Circuit Range / Performance |
| P0A4D-255 | Generator Position Sensor Circuit Low |
| P0A51-174 | Drive Motor "A" Current Sensor Circuit |
| P0A60-288 | Drive Motor "A" Phase V Current |
| P0A60-290 | Drive Motor "A" Phase V Current |
| P0A60-294 | Drive Motor "A" Phase V Current |
| P0A60-501 | Drive Motor "A" Phase V Current |
| P0A63-296 | Drive Motor "A" Phase W Current |
| P0A63-298 | Drive Motor "A" Phase W Current |
| P0A63-302 | Drive Motor "A" Phase W Current |
| P0A63-502 | Drive Motor "A" Phase W Current |
| P0A72-326 | Generator Phase V Current |
| P0A72-328 | Generator Phase V Current |
| P0A72-333 | Generator Phase V Current |
| P0A72-515 | Generator Phase V Current |
| P0A75-334 | Generator Phase W Current |
| P0A75-336 | Generator Phase W Current |
| P0A75-341 | Generator Phase W Current |
| P0A75-516 | Generator Phase W Current |
| P0A78-113 | Drive Motor "A" Inverter Performance |
| P0A78-121 | Drive Motor "A" Inverter Performance |
| P0A78-128 | Drive Motor "A" Inverter Performance |
| P0A78-202 | Drive Motor "A" Inverter Performance |
| P0A78-266 | Drive Motor "A" Inverter Performance |
| P0A78-267 | Drive Motor "A" Inverter Performance |
| P0A78-279 | Drive Motor "A" Inverter Performance |
| P0A78-282 | Drive Motor "A" Inverter Performance |
| P0A78-284 | Drive Motor "A" Inverter Performance |
| P0A78-286 | Drive Motor "A" Inverter Performance |
| P0A78-287 | Drive Motor "A" Inverter Performance |
| P0A78-306 | Drive Motor "A" Inverter Performance |
| P0A78-503 | Drive Motor "A" Inverter Performance |
| P0A78-504 | Drive Motor "A" Inverter Performance |
| P0A78-505 | Drive Motor "A" Inverter Performance |
| P0A78-506 | Drive Motor "A" Inverter Performance |
| P0A78-510 | Drive Motor "A" Inverter Performance |
| P0A78-565 | Drive Motor "A" Inverter Performance |
| P0A78-586 | Drive Motor "A" Inverter Performance |
| P0A78-806 | Drive Motor "A" Inverter Performance |
| P0A78-807 | Drive Motor "A" Inverter Performance |
| P0A78-808 | Drive Motor "A" Inverter Performance |
| P0A7A-122 | Generator Inverter Performance |
| P0A7A-130 | Generator Inverter Performance |
| P0A7A-203 | Generator Inverter Performance |
| P0A7A-322 | Generator Inverter Performance |
| P0A7A-324 | Generator Inverter Performance |
| P0A7A-325 | Generator Inverter Performance |
| P0A7A-344 | Generator Inverter Performance |
| P0A7A-517 | Generator Inverter Performance |
| P0A7A-518 | Generator Inverter Performance |
| P0A7A-522 | Generator Inverter Performance |
| P0A7A-809 | Generator Inverter Performance |
| P0A7A-810 | Generator Inverter Performance |
| P0A7A-811 | Generator Inverter Performance |
| P0A90-251 | Drive Motor "A" Performance |
| P0A90-509 | Drive Motor "A" Performance |
| P0A92-261 | Hybrid Generator Performance |
| P0A92-521 | Hybrid Generator Performance |
| P0A93-346 | Inverter Cooling System Performance |
| P0A94-127 | DC / DC Converter Performance |
| P0A94-172 | DC / DC Converter Performance |
| P0A94-442 | DC / DC Converter Performance |
| P0A94-547 | DC / DC Converter Performance |
| P0A94-548 | DC / DC Converter Performance |
| P0A94-549 | DC / DC Converter Performance |
| P0A94-550 | DC / DC Converter Performance |
| P0A94-553 | DC / DC Converter Performance |
| P0A94-554 | DC / DC Converter Performance |
| P0A94-555 | DC / DC Converter Performance |
| P0A94-556 | DC / DC Converter Performance |
| P0A94-557 | DC / DC Converter Performance |
| P0A94-564 | DC / DC Converter Performance |
| P0A94-585 | DC / DC Converter Performance |
| P0A94-587 | DC / DC Converter Performance |
| P0A94-589 | DC / DC Converter Performance |
| P0A94-590 | DC / DC Converter Performance |
| P0AA1-231 | Hybrid Battery Positive Contactor Circuit Stuck Closed |
| P0AA1-233 | Hybrid Battery Positive Contactor Circuit Stuck Closed |
| P0AA4-232 | Hybrid Battery Negative Contactor Circuit Stuck Closed |
| P0AA6-526 | Hybrid Battery Voltage System Isolation Fault |
| P0AA6-611 | Hybrid Battery Voltage System Isolation Fault |
| P0AA6-612 | Hybrid Battery Voltage System Isolation Fault |
| P0AA6-613 | Hybrid Battery Voltage System Isolation Fault |
| P0AA6-614 | Hybrid Battery Voltage System Isolation Fault |
| P0AA7-727 | Hybrid Battery Voltage Isolation Sensor Circuit |
| P0AC0-817 | Hybrid Battery Pack Current Sensor Circuit Range / Performance |
| P0ADB-227 | Hybrid Battery Positive Contactor Control Circuit Low |
| P0ADC-226 | Hybrid Battery Positive Contactor Control Circuit High |
| P0ADF-229 | Hybrid Battery Negative Contactor Control Circuit Low |
| P0AE0-228 | Hybrid Battery Negative Contactor Control Circuit High |
| P0AE2-773 | Hybrid Battery Precharge Contactor Circuit Stuck Closed |
| P0AE6-225 | Hybrid Battery Precharge Contactor Control Circuit Low |
| P0AE7-224 | Hybrid Battery Precharge Contactor Control Circuit High |
| P0AEE-277 | Motor Inverter Temperature Sensor "A" Circuit Range / Performance |
| P0AEF-275 | Drive Motor Inverter Temperature Sensor "A" Circuit Low |
| P0AF0-274 | Drive Motor Inverter Temperature Sensor "A" Circuit High |
| P0AF1-276 | Drive Motor Inverter Temperature Sensor "A" Circuit Intermittent / Erratic |
| P0AFC-129 | Hybrid Battery Pack Sensor Module |
| P0AFC-150 | Hybrid Battery Pack Sensor Module |
| P0BCD-315 | Generator Inverter Temperature Sensor Circuit Range / Performance |
| P0BCE-313 | Generator Inverter Temperature Sensor Circuit Low |
| P0BCF-312 | Generator Inverter Temperature Sensor Circuit High |
| P0BD0-314 | Generator Inverter Temperature Sensor Circuit Intermittent / Erratic |
| P0C30-390 | Hybrid Battery Pack State of Charge High |
| P0C39-626 | DC / DC Converter Temperature Sensor "A" Range / Performance |
| P0C3A-621 | DC / DC Converter Temperature Sensor "A" Low |
| P0C3B-622 | DC / DC Converter Temperature Sensor "A" High |
| P0C3C-625 | DC / DC Converter Temperature Sensor "A" Intermittent / Erratic |
| P0C3E-628 | DC / DC Converter Temperature Sensor "B" Range / Performance |
| P0C3F-623 | DC / DC Converter Temperature Sensor "B" Low |
| P0C40-624 | DC / DC Converter Temperature Sensor "B" High |
| P0C41-627 | DC / DC Converter Temperature Sensor "B" Intermittent / Erratic |
| P0C73-776 | Motor Electronics Coolant Pump "A" Control Performance |
| P0C76-523 | Hybrid Battery System Discharge Time Too Long |
| P1606-308 | Collision has been detected or Collision Sensor Connection (Open) |
| P1606-317 | Collision has been detected or Collision Sensor Connection (Open) |
| P181A-596 | Gear Lever X Position Circuit "A" / "B" Correlation |
| P181B-595 | Gear Lever Y Position Circuit "A" / "B" Correlation |
| P182B-577 | Gear Lever X Position "B" Circuit Low |
| P182C-578 | Gear Lever X Position "B" Circuit High |
| P182E-573 | Gear Lever Y Position "B" Circuit Low |
| P182F-574 | Gear Lever Y Position "B" Circuit High |
| P2120-152 | Throttle / Pedal Position Sensor / Switch "D" Circuit |
| P2121-106 | Throttle / Pedal Position Sensor / Switch "D" Circuit Range / Performance |
| P2122-104 | Throttle / Pedal Position Sensor / Switch "D" Circuit Low Input |
| P2123-105 | Throttle / Pedal Position Sensor / Switch "D" Circuit High Input |
| P2125-153 | Throttle / Pedal Position Sensor / Switch "E" Circuit |
| P2126-109 | Throttle / Pedal Position Sensor / Switch "E" Circuit Range / Performance |
| P2127-107 | Throttle / Pedal Position Sensor / Switch "E" Circuit Low Input |
| P2128-108 | Throttle / Pedal Position Sensor / Switch "E" Circuit High Input |
| P2138-110 | Throttle / Pedal Position Sensor / Switch "D" / "E" Voltage Correlation |
| P2138-154 | Throttle / Pedal Position Sensor / Switch "D" / "E" Voltage Correlation |
| P2228-268 | Barometric Pressure Sensor "A" Circuit Low |
| P2229-269 | Barometric Pressure Sensor "A" Circuit High |
| P2511-149 | HV CPU Power Relay Sense Circuit Intermittent No Continuity |
| P2532-772 | Ignition Switch Run Position Circuit High |
| P3000-388 | Battery Control System |
| P3000-389 | Battery Control System |
| P3000-603 | Battery Control System |
| P3004-131 | High Voltage Power Resource |
| P3004-132 | High Voltage Power Resource |
| P3004-133 | High Voltage Power Resource |
| P3004-800 | High Voltage Power Resource |
| P3004-801 | High Voltage Power Resource |
| P3004-803 | High Voltage Power Resource |
| P3107-213 | Lost Communication with Airbag System Control Module |
| P3107-214 | Lost Communication with Airbag System Control Module |
| P3107-215 | Lost Communication with Airbag System Control Module |
| P3108-536 | Lost Communication with A/C System Control Module |
| P3110-223 | HV Main Relay |
| P3147-239 | Transmission system |
| P3147-240 | Transmission system |
| P3147-241 | Transmission system |
| P3147-242 | Transmission system |
| P314A-828 | Inverter Coolant Pump Speed Signal |
| P3232-749 | Short to GND in Blocking of HV Gate Connection |
| P3233-750 | Open or Short to B+ in Blocking of HV Gate Connection |
| P324E-788 | MG-ECU Power Relay Intermittent Circuit |
| U0100-211 | Lost Communication with ECM / PCM "A" |
| U0100-212 | Lost Communication with ECM / PCM "A" |
| U0100-530 | Lost Communication with ECM / PCM "A" |
| U0110-159 | Lost Communication with Drive Motor Control Module "A" |
| U0110-160 | Lost Communication with Drive Motor Control Module "A" |
| U0110-656 | Lost Communication with Drive Motor Control Module "A" |
| U0110-657 | Lost Communication with Drive Motor Control Module "A" |
| U0129-220 | Lost Communication with Brake System Control Module |
| U0129-222 | Lost Communication with Brake System Control Module |
| U0129-527 | Lost Communication with Brake System Control Module |
| U0129-528 | Lost Communication with Brake System Control Module |
| U0140-146 | Communication Error from Body ECU to HV ECU |
| U0151-763 | Communication Error from Airbag ECU to HV ECU |
| U0164-594 | Communication Error from A/C ECU to HV ECU |
| U0164-827 | Communication Error from A/C ECU to HV ECU |
| U0424-537 | Invalid Data Received from HVAC Control Module |
| U1107-436 | Lost Communication with Power Management Module |
Factory Service Tools
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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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