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Service bulletins for the 2012 Toyota PRIUS

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

467 on file from NHTSA, as of 2026-10-19.

About P0A94 on the 2012 Toyota PRIUS: what the code means, and the bulletins and recalls about the same components.

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Only bulletins with trouble code: P0A94 are shown. Show all

Bulletins, newest first
23TE032023-07-31. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. DP: The Customer Confidence Program is a component of a class action settlement that includes several elements of coverage. The Customer Confidence Program provides coverage as it applies to the Intelligent Power Module (IPM). The specific condition covered by this Customer Confidence Program 23TE03 is failure of the IPM located inside the inverter assembly of the hybrid system indicated by DTCs P0A94, P0A1A, P324E, and/or P3004. If any of these DTCs are detected, various warning lamps on the instrument panel will also illuminate and the vehicle will enter Fail Safe Mode.
23TE032023-05-01. Service bulletin. ELECTRICAL SYSTEM. DP: The Customer Confidence Program is a component of a class action settlement that includes several elements of coverage. The Customer Confidence Program provides coverage as it applies to the Intelligent Power Module (IPM). The specific condition covered by this Customer Confidence Program 23TE03 is failure of the IPM located inside the inverter assembly of the hybrid system indicated by DTCs P0A94, P0A1A, P324E, and/or P3004. If any of these DTCs are detected, various warning lamps on the instrument panel will also illuminate and the vehicle will enter Fail Safe Mode.
TSB0003212023-05-01. Service bulletin. ELECTRICAL SYSTEM. TSB: Some 2010 ? 2015 model year Prius and 2012 ? 2017 model year Prius V vehicles may exhibit a MIL ON condition with Diagnostic Trouble Codes (DTCs) P0A94, P324E, P0A1A, and/or P3004, indicating a malfunction has occurred in the inverter assembly with converter. Follow the Repair Procedure in this bulletin to identify the specific components within the inverter assembly with converter that need to be replaced and address this condition.
T-SB-0003-212021-02-16. Service bulletin. ELECTRICAL SYSTEM:PROPULSION SYSTEM:INVERTER. TSB: Some 2010 ? 2015 model year Prius and 2012 ? 2017 model year Prius V vehicles may exhibit a MIL ON condition with Diagnostic Trouble Codes (DTCs) P0A94, P324E, P0A1A, and/or P3004, indicating a malfunction has occurred in the inverter assembly with converter. Follow the Repair Procedure in this bulletin to identify the specific components within the inverter assembly with converter that need to be replaced and address this condition.
T-SB-0036-162020-08-24. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; HYBRID PROPULSION SYSTEM: INVERTER; ENGINE. TSB: Some 2010 - 2015 model year Prius and 2012 - 2017 model year Prius V vehicles may exhibit a MIL ON condition with Diagnostic Trouble Codes (DTCs) P0A94, P324E, P0A1A, and/or P3004, indicating a malfunction has occurred in the inverter assembly with converter. Follow the Repair Procedure in this bulletin to identify the specific components within the inverter assembly with converter that need to be replaced and address this condition.
T-SB-0036-16_Rev2019-02-19. Service bulletin. ELECTRICAL SYSTEM. TSB: REVISION NOTICE January 31, 2019 Rev1: ? The entire bulletin has been updated. Any previous printed versions of this bulletin should be discarded. Some 2010 ? 2014 model year Prius and 2012 ? 2014 model year Prius V vehicles may exhibit a MIL ON condition with Diagnostic Trouble Codes (DTCs) P0A94, P324E, P0A1A, and/or P3004, indicating a malfunction has occurred in the hybrid inverter assembly. To identify the specific components within the inverter assembly that need to be replaced, follow the Repair Procedure in this bulletin to address this condition.
ZE3_Toyota POL142018-10-15. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Warranty Policy Bulletin: Toyota has received some reports indicating the Intelligent Power Module (IPM) located inside the inverter assembly of the hybrid system may fail. This condition is indicated by the hybrid system diagnostic trouble codes (DTCs): P0A94, P324E, P3004, and/or P0A1A. If one or more of these DTCs are detected, various warning lamps on the instrument panel will illuminate and the vehicle will enter fail safe mode.
ZE3-Toyota POL142018-10-15. Service bulletin. ELECTRICAL SYSTEM. Warranty Program Bulletin: Toyota has received some reports indicating the Intelligent Power Module (IPM) located inside the inverter assembly of the hybrid system may fail. This condition is indicated by the hybrid system diagnostic trouble codes (DTCs): P0A94, P324E, P3004, and/or P0A1A. If one or more of these DTCs are detected, various warning lamps on the instrument panel will illuminate and the vehicle will enter fail safe mode.
ZF5-T-SB-0036-162018-07-02. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. TSB: Some 2010 ? 2014 Prius and 2012 ? 2014 Prius V model vehicles may exhibit a MIL ?ON? condition with DTCs P0A94, P324E, P0A1A, or P3004, indicating a malfunction has occurred in the hybrid inverter assembly. To help identify the specific components within the inverter assembly that need to be replaced, follow the steps in this service bulletin to address the condition.
ZE3-Warranty Pol2018-07-02. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Warranty Policy Bulletin (POL14-05): Toyota has received some reports indicating the Intelligent Power Module (IPM) located inside the inverter assembly of the hybrid system may fail. This condition is indicated by the hybrid system diagnostic trouble codes (DTCs): P0A94, P324E, P3004, and/or P0A1A. If one or more of these DTCs are detected, various warning lamps on the instrument panel will illuminate and the vehicle will enter fail safe mode.
ZE3-Dealer Lette2018-07-02. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. Dealer Letter: In these vehicles, Toyota has received some reports where the Intelligent Power Module (IPM) located inside the inverter assembly of the hybrid system may fail. This condition is indicated by hybrid system diagnostic trouble codes (DTCs): P0A94, P324E, P3004, and/or P0A1A. If one or more of these DTCs are detected, various warning lamps on the instrument panel will also illuminate and the vehicle will enter fail safe mode. Although the Hybrid Inverter assembly is covered by Toyota?s New Vehicle Limited Warranty for 8 years or 100,000 miles (whichever occurs first), we at Toyota care about the customers? ownership experience. Toyota is now extending the warranty coverage for repairs related to failure of the Intelligent Power Module (IPM). Please see the Warranty Enhancement Program Details for additional information.
ZF5-T-SB-0036-162018-06-11. Service bulletin. EQUIPMENT; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TSB: Some 2010 ? 2014 Prius and 2012 ? 2014 Prius V model vehicles may exhibit a MIL ?ON? condition with DTCs P0A94, P324E, P0A1A, or P3004, indicating a malfunction has occurred in the hybrid inverter assembly. To help identify the specific components within the inverter assembly that need to be replaced, follow the steps in this service bulletin to address the condition.
ZE3-Warranty Pol2018-06-11. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Warranty Policy Bulletin (POL14-05): Toyota has received some reports indicating the Intelligent Power Module (IPM) located inside the inverter assembly of the hybrid system may fail. This condition is indicated by the hybrid system diagnostic trouble codes (DTCs): P0A94, P324E, P3004, and/or P0A1A. If one or more of these DTCs are detected, various warning lamps on the instrument panel will illuminate and the vehicle will enter fail safe mode.
ZE3-Dealer Lette2018-06-11. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM. Dealer Letter: In these vehicles, Toyota has received some reports where the Intelligent Power Module (IPM) located inside the inverter assembly of the hybrid system may fail. This condition is indicated by hybrid system diagnostic trouble codes (DTCs): P0A94, P324E, P3004, and/or P0A1A. If one or more of these DTCs are detected, various warning lamps on the instrument panel will also illuminate and the vehicle will enter fail safe mode. Although the Hybrid Inverter assembly is covered by Toyota?s New Vehicle Limited Warranty for 8 years or 100,000 miles (whichever occurs first), we at Toyota care about the customers? ownership experience. Toyota is now extending the warranty coverage for repairs related to failure of the Intelligent Power Module (IPM). Please see the Warranty Enhancement Program Details for additional information.
T-SB-0036-162018-06-11. Service bulletin. ENGINE; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TSB: Some 2010 ? 2014 Prius and 2012 ? 2014 Prius V model vehicles may exhibit a MIL ?ON? condition with DTCs P0A94, P324E, P0A1A, or P3004, indicating a malfunction has occurred in the hybrid inverter assembly. To help identify the specific components within the inverter assembly that need to be replaced, follow the steps in this service bulletin to address the condition.
ZE3_Toyota POL142018-04-02. Service bulletin. HYBRID PROPULSION SYSTEM. Warranty Policy Bulletin: Toyota has received some reports indicating the Intelligent Power Module (IPM) located inside the inverter assembly of the hybrid system may fail. This condition is indicated by the hybrid system diagnostic trouble codes (DTCs): P0A94, P324E, P3004, and/or P0A1A. If one or more of these DTCs are detected, various warning lamps on the instrument panel will illuminate and the vehicle will enter fail safe mode.
ZE3_WEP_Dealer L2017-08-01. Service bulletin. ELECTRICAL SYSTEM; HYBRID PROPULSION SYSTEM: INVERTER. Dealer Letter: In our continuing efforts to ensure the best in customer satisfaction, Toyota is announcing a Warranty Enhancement Program to extend the warranty coverage for repairs related failure of the Intelligent Power Module (IPM). The vehicles covered under this Warranty Enhancement must first have Safety Recall E0E (launched in mid-February, 2014) performed (if applicable). In these vehicles, Toyota has received some reports where the Intelligent Power Module (IPM) located inside the inverter assembly of the hybrid system may fail. This condition is indicated by hybrid system diagnostic trouble codes (DTCs): P0A94, P324E, P3004, and/or P0A1A. If one or more of these DTCs are detected, various warning lamps on the instrument panel will also illuminate and the vehicle will enter fail safe mode. Although the Hybrid Inverter assembly is covered by Toyota?s New Vehicle Limited Warranty for 8 years or 100,000 miles (whichever occurs first), we at Toyota care about the customers? ownership experience. Toyota is now extending the warranty coverage for repairs related to failure of the Intelligent Power Module (IPM).
ZE3_WEP_Publishe2017-08-01. Service bulletin. HYBRID PROPULSION SYSTEM: INVERTER; ELECTRICAL SYSTEM. Region Letter: In our continuing efforts to ensure the best in customer satisfaction, Toyota is announcing a Warranty Enhancement Program to extend the warranty coverage for repairs related to failure of the Intelligent Power Module (IPM). The vehicles covered under this Warranty Enhancement must first have Safety Recall E0E (launched in mid-February, 2014) performed (if applicable). In these vehicles, Toyota has received some reports where the Intelligent Power Module (IPM) located inside the inverter assembly of the hybrid system may fail. This condition is indicated by hybrid system diagnostic trouble codes (DTCs): P0A94, P324E, P3004, and/or P0A1A. If one or more of these DTCs are detected, various warning lamps on the instrument panel will also illuminate and the vehicle will enter fail safe mode. Although the Hybrid Inverter assembly is covered by Toyota's New Vehicle Limited Warranty for 8 years or 100,000 miles (whichever occurs first), we at Toyota care about the customers' ownership experience. Toyota is now extending the warranty coverage for repairs related to failure of the Intelligent Power Module (IPM). Please see the Warranty Enhancement Program Details for additional information.
ZF5_T-SB-0036-162017-04-05. Service bulletin. HYBRID PROPULSION SYSTEM: INVERTER; ELECTRICAL SYSTEM. TSB: SOME 2010 – 2014 PRIUS AND 2012 – 2014 PRIUS V MODEL VEHICLES MAY EXHIBIT A MIL “ON” CONDITION WITH DTCS P0A94, P324E, P0A1A, OR P3004, INDICATING A MALFUNCTION HAS OCCURRED IN THE HYBRID INVERTER ASSEMBLY. TO HELP IDENTIFY THE SPECIFIC COMPONENTS WITHIN THE INVERTER ASSEMBLY THAT NEED TO BE REPLACED, FOLLOW THE STEPS IN THIS SERVICE BULLETIN TO ADDRESS THE CONDITION.
ZE3_WARRANTY POL2017-04-04. Service bulletin. ELECTRICAL SYSTEM; HYBRID PROPULSION SYSTEM: INVERTER. WARRANTY POLICY BULLETIN (POL14-05): TOYOTA HAS RECEIVED SOME REPORTS INDICATING THE INTELLIGENT POWER MODULE (IPM) LOCATED INSIDE THE INVERTER ASSEMBLY OF THE HYBRID SYSTEM MAY FAIL. THIS CONDITION IS INDICATED BY THE HYBRID SYSTEM DIAGNOSTIC TROUBLE CODES (DTCS): P0A94, P324E, P3004, AND/OR P0A1A. IF ONE OR MORE OF THESE DTCS ARE DETECTED, VARIOUS WARNING LAMPS ON THE INSTRUMENT PANEL WILL ILLUMINATE AND THE VEHICLE WILL ENTER FAIL SAFE MODE.
ZE3_DEALER LETTE2017-04-04. Service bulletin. HYBRID PROPULSION SYSTEM: INVERTER; ELECTRICAL SYSTEM. DEALER LETTER: IN THESE VEHICLES, TOYOTA HAS RECEIVED SOME REPORTS WHERE THE INTELLIGENT POWER MODULE (IPM) LOCATED INSIDE THE INVERTER ASSEMBLY OF THE HYBRID SYSTEM MAY FAIL. THIS CONDITION IS INDICATED BY HYBRID SYSTEM DIAGNOSTIC TROUBLE CODES (DTCS): P0A94, P324E, P3004, AND/OR P0A1A. IF ONE OR MORE OF THESE DTCS ARE DETECTED, VARIOUS WARNING LAMPS ON THE INSTRUMENT PANEL WILL ALSO ILLUMINATE AND THE VEHICLE WILL ENTER FAIL SAFE MODE. ALTHOUGH THE HYBRID INVERTER ASSEMBLY IS COVERED BY TOYOTA’S NEW VEHICLE LIMITED WARRANTY FOR 8 YEARS OR 100,000 MILES (WHICHEVER OCCURS FIRST), WE AT TOYOTA CARE ABOUT THE CUSTOMERS’ OWNERSHIP EXPERIENCE. TOYOTA IS NOW EXTENDING THE WARRANTY COVERAGE FOR REPAIRS RELATED TO FAILURE OF THE INTELLIGENT POWER MODULE (IPM). PLEASE SEE THE WARRANTY ENHANCEMENT PROGRAM DETAILS FOR ADDITIONAL INFORMATION.
T-SB-0036-162017-02-27. Service bulletin. HYBRID PROPULSION SYSTEM: INVERTER; ELECTRICAL SYSTEM. TSB: SOME 2010 – 2014 PRIUS AND 2012 – 2014 PRIUS V MODEL VEHICLES MAY EXHIBIT A MIL “ON” CONDITION WITH DTCS P0A94, P324E, P0A1A, OR P3004, INDICATING A MALFUNCTION HAS OCCURRED IN THE HYBRID INVERTER ASSEMBLY. TO HELP IDENTIFY THE SPECIFIC COMPONENTS WITHIN THE INVERTER ASSEMBLY THAT NEED TO BE REPLACED, FOLLOW THE STEPS IN THIS SERVICE BULLETIN TO ADDRESS THE CONDITION.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.