PowertrainP1042
CautionSeverity: Caution - get it checked when you can
Phase A overtemperature
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 20
| Brand | Code | Description | System |
|---|---|---|---|
| BAIC Motor | P1042 | Power battery discharging overcurrent protection fault Brand | Powertrain |
| Mercedes-Benz | P1042 | No description available | Powertrain |
| BMW | P1042 | RAM fault Brand | Powertrain |
| BYD | P1042 | NO. 067 battery voltage sampling wire loop fault Brand | Powertrain |
| Chery | P1042 | Throttle Valve (TVA) Bridge H Drive Circuit Overheat Brand | Powertrain |
| Daewoo | P1042 | No Latched B+ 1/2 Volt Drop Brand | Powertrain |
| DFXK | P1042 | Throttle valve H-bridge drive circuit overheated Brand | Powertrain |
| EOBD | P1042 | Przegrzanie fazy A Brand | Powertrain |
| Geely | P1042 | Supply Voltage B for Injectors: Circuit Malfunction Brand | Powertrain |
| GM | P1042 | No Latched B+ 1/2 Volt Drop Brand | Powertrain |
| Great Wall | P1042 | Throttle valve (TVA) bridge H drive circuit overheat Brand | Powertrain |
| Honda | P1042 | No description available | Powertrain |
| Isuzu | P1042 | No description available | Powertrain |
| Mahindra | P1042 | No description available | Powertrain |
| Mitsubishi | P1042 | RMCU IGBT2 high temperature Brand | Powertrain |
| Peugeot | P1042 | No description available | Powertrain |
| Porsche | P1042 | No description available | Powertrain |
| Proton | P1042 | RMCU IGBT2 high temperature Brand | Powertrain |
| Saab | P1042 | No Latched B+ 1/2 Volt Drop Brand | Powertrain |
| Toyota | P1042 | Phase A overtemperature 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 1
These 7-character codes are manufacturer-specific variants of P1042 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| SsangYong | P104200 | PMO Data Invalid Brand | Powertrain |
6Related codes
Browse Pxxx codes or P104xx codes.