P0C4A · Manufacturer communications

CHRYSLER · 2024-12-13

"Flash: Hybrid Control Processor (HCP) and Auxiliary Hybrid Control Processor (AHCP) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● **P0A78 - Drive Motor A Inverter Performance. ● P0A79 - Drive Motor B Inverter Performance.** ● P0A33 - Drive Motor B Temperature Sensor 1 Circuit High. ● P0A2D - Sensor Power Supply 1 Circuit High ● P215B - Vehicle Speed Output Shaft Speed Correlation. ● P0C4A - Drive Motor A Inverter Over Temperature. ● P0E15 - Hybrid-Ev Battery Pack Coolant Heater A Control Performance. ● P1AFE - MCPB Improper Shut Down. ● P1AF8 - MCPA Control Module Shutdown Performance. ● P0513 - Invalid Skim Key. ● U151A-87 - Hybrid Control Processor Secret…

AUDI · 2024-07-31

This bulletin provides information when DTCs P0C4A00, P2B2800 and/or P0CFF00 Stored in the Hybrid Battery Management control unit.

AUDI · 2023-10-02

This bulletin provides information for when DTCs P0C4A00, P2B2800, and/or P0CFF00 is stored in the Hybrid Battery Management control unit.

BENTLEY · 2023-09-12

Bentayga/New Flying Spur - DTC P0C4A00 Hybrid/EV Battery Pack Coolant Pump 'A' Control Performance within address 8C. Customer statement / workshop findings - Speed limitation noticeable when driving in EV mode (Restricting the vehicle speed to approximately 30mph/48kph) - Refer also to the video on the Bentley Hub referencing TPI 2066246/- - No other warnings are evident within the DIP Workshop findings: - DTC P0C4A00 Hybrid/EV Battery Pack Coolant Pump 'A' Control Performance within Address 8C Battery Regulation Control Unit

AUDI · 2023-05-09

This bulletin provides information for when the warning message "Electric drive: fault. Please contact workshop" appears in the dash panel insert, along with the DTC P0C4A00, or DTC P0CFF00, and/or DTC P2B2800.

AUDI · 2023-04-25

This bulletin provides instruction for when the warning message "Electric drive: fault. Please contact workshop" appears in the presence of one of more of the following DTCS: P0C4A00, P0CFF00, and/or P2B2800.

CHRYSLER · 2022-03-11

Flash: Hybrid Control Processor (HCP) and Auxiliary Hybrid Control Processor (AHCP) Updates This bulletin involves reprogramming the HCP and AHCP or also known as Power InverterModule (PIM) with the latest available software. Technicians and/or customers may report the vehicle will not pass a state smog check due to permanent fault codes which will not clear.As a result, the vehicles are not eligible to be registered in certain states. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technicianmay find one or more of the following DTCs have been set: P0A33 - Drive Motor B Temperature Sensor 1 Circuit High. P0A2D - Sensor Power Supply 1 Circuit High. P215B - Vehicle Speed Output Shaft Speed Correlation. P0C4A - Drive Motor A Inverter…

BENTLEY · 2022-03-04

Bentayga/New Flying Spur - DTC P0C4A00 Hybrid/EV Battery Pack Coolant Pump A Control Performance within address 8C. Customer statement / workshop findings: - Speed limitation noticeable when driving in EV mode (Restricting the vehicle speed to approximately 30mph/48kph) - Refer also to the video on the Bentley Hub referencing TPI 2066246/- - No other warnings are evident within the DIP Workshop findings - DTC P0C4A00 Hybrid/EV Battery Pack Coolant Pump "A" Control Performance within Address 8C Battery Regulation Control Unit. Measure: 1) Referring to Rep.Gr 93 - Carry out an Inspection and classification of the Hybrid battery unit AX1.

FORD, LINCOLN · 2020-10-02

Some 2020 Explorer/Aviator/Police Interceptor Utility vehicles equipped with a hybrid powertrain may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P0C48, P0C49, P2B29, P0CFF, P0E1F, P0C4B, P0C4A, P2CF3, P0A06, P0A07, P2D01, P2D00, P2D03, P2D04, P0C73, and/or P2D02 stored in the powertrain control module (PCM). This may be due to the software in the battery energy control module (BECM). To correct the condition, follow the Service Procedure to reprogram the BECM.

LINCOLN · 2020-08-28

Some 2020 Aviator vehicles equipped with a 3.0L hybrid engine may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P0C48, P0C49, P2B29, P0CFF, P0E1F, P0C4B, P0C4A, P2CF3, P0A06, P0A07, P2D01, P2D00, P2D03, P2D04, P0C73, and/or P2D02 stored in the powertrain control module (PCM). This may be due to the software in the battery energy control module (BECM). To correct the condition, follow the Service Procedure to reprogram the BECM.

CADILLAC, CHEVROLET · 2019-10-24

This preliminary information bulletin provides a procedure to correct a condition of a Check Engine Light with DTC P0C4A that Sets immediately after a repair to the High Voltage battery cooling system that involves draining/refilling of coolant.

PORSCHE · 2018-05-28

Technical Background The coolant pump for the high voltage battery actively monitors its own speed and current consumption. For a given commanded speed, if the actual pump speed exceeds a defined value and the current consumption drops below a certain threshold, a dry run condition is detected. The pump communicates this to the high voltage battery control unit and fault code P0C4A00 is stored. One possible cause of this is air in the low temperature cooling system. This fault can take several hundred miles to set.