PowertrainP0A94
CautionSeverity: Caution - get it checked when you can
DC/DC converter performance
Key terms: Control module: a small computer that runs one part of the car · Powertrain: engine, transmission and emissions
1What it means in plain English
The engine or powertrain control system has stored a fault that does not have specific guidance in this database yet.
2Common causes
- Sensor or actuator fault
- Wiring or connector fault
- Vacuum or intake leak
- Fuel or ignition problem
- Control module fault
3Can I drive?
Have it diagnosed promptly. If the car runs and drives normally, drive gently to a workshop. If it runs badly, stalls, overheats, loses oil pressure, or a warning light is flashing or red, stop safely and get professional help. If the code concerns the brakes, brake vacuum or brake assist, do not drive until it is checked: a hard pedal or longer stopping distance means stop.
This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.
4Brand data 29
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P0A94 | No description available | Powertrain |
| BAIC Motor | P0A94 | DC/DC Converter Performance Brand | Powertrain |
| Mercedes-Benz | P0A94 | No description available | Powertrain |
| BYD | P0A94 | DC/DC Converter Performance Brand | Powertrain |
| Chery | P0A94 | DC/DC Converter Performance Brand | Powertrain |
| Daewoo | P0A94 | DC/DC Converter Performance Brand | Powertrain |
| DFFS | P0A94 | DC/DC Converter Performance Brand | Powertrain |
| DFFX | P0A94 | DC/DC Converter Performance Brand | Powertrain |
| DFXK | P0A94 | DC/DC Converter Performance Brand | Powertrain |
| EOBD | P0A94 | DC/DC menič 'A' výkon Brand | Powertrain |
| Ford | P0A94 | DC-DC converter failure Brand | Powertrain |
| Geely | P0A94 | DC/DC Converter Performance Brand | Powertrain |
| GM | P0A94 | DC/DC Converter Performance Brand | Powertrain |
| Great Wall | P0A94 | DC/DC Converter Performance Brand | Powertrain |
| Hafei | P0A94 | DC/DC Converter Performance Brand | Powertrain |
| Holden | P0A94 | Power Supply Transformer Performance Brand | Powertrain |
| Honda | P0A94 | No description available | Powertrain |
| Hyundai | P0A94 | No description available | Powertrain |
| Isuzu | P0A94 | No description available | Powertrain |
| Land Rover | P0A94 | Placeholder- -49- Special Brand | Powertrain |
| Mazda | P0A94 | DC-DC converter failure Brand | Powertrain |
| Opel | P0A94 | DC/DC Converter Performance Brand | Powertrain |
| Peugeot | P0A94 | No description available | Powertrain |
| Proton | P0A94 | No description available | Powertrain |
| Saab | P0A94 | DC/DC Converter Performance Brand | Powertrain |
| MG (SAIC) | P0A94 | DCDC Hardware Fault Brand | Powertrain |
| Subaru | P0A94 | Detail Code 0800 Brand | Powertrain |
| Suzuki | P0A94 | DC/DC Converter 'A' Performance Brand | Powertrain |
| Toyota | P0A94 | DC/DC converter performance Brand | Powertrain |
Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.
5Extended variant codes 16
These 7-character codes are manufacturer-specific variants of P0A94 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | P0A9400 | DC/DC Converter Performance Brand | Powertrain |
| Porsche | P0A9400 | No description available | Powertrain |
| Volkswagen | P0A9400 | Address 51, DTC memory entries P056200, P1B1800 Brand | Powertrain |
| Mercedes-Benz | P0A941F | The control unit 'DC/DC converter' has a malfunction. There is a sporadic fault. Brand | Powertrain |
| Mercedes-Benz | P0A9442 | DC/DC Converter 'A' Performance - General Memory Failure (Safety test related error) Brand | Powertrain |
| Mercedes-Benz | P0A9443 | DC/DC Converter 'A' Performance - Special Memory Failure Brand | Powertrain |
| Mercedes-Benz | P0A9447 | The control unit 'DC/DC converter' has a malfunction. There is a runtime error. Brand | Powertrain |
| Mercedes-Benz | P0A9448 | DC/DC Converter 'A' Performance - Supervision Software Failure Brand | Powertrain |
| Mercedes-Benz | P0A9449 | LV chip protection trip fault Brand | Powertrain |
| Mercedes-Benz | P0A9450 | Gate drive fault Brand | Powertrain |
| Mercedes-Benz | P0A9453 | The control unit 'DC/DC converter' has a malfunction. The component is deactivated. Brand | Powertrain |
| Mercedes-Benz | P0A9464 | The control unit 'DC/DC converter' has a malfunction. There is an implausible signal. Brand | Powertrain |
| Mercedes-Benz | P0A9492 | The control unit 'DC/DC converter' has a malfunction. The function or the instruction is faulty. Brand | Powertrain |
| Mercedes-Benz | P0A9496 | The control unit 'DC/DC converter' has a malfunction. There is an internal component fault. Brand | Powertrain |
| Mercedes-Benz | P0A94FA | The control unit 'DC/DC converter' has a malfunction. DCDC Buck mode control. Brand | Powertrain |
| Mercedes-Benz | P0A94FF | The control unit 'DC/DC converter' has a malfunction. Precharge error. Brand | Powertrain |
6Related codes
Browse Pxxx codes or P0A9xx codes.