PowertrainP1B42
CautionSeverity: Caution - get it checked when you can
Drive Motor 2 Control Module Hybrid/EV Battery Voltage Isolation Sensing 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?
The electrical system may fail and the battery may go flat, risking a stall. If the battery or charging warning light is on, drive straight to a workshop.
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 15
| Brand | Code | Description | System |
|---|---|---|---|
| BYD | P1B42 | GTOV bus voltage slope abnormal Brand | Powertrain |
| Chery | P1B42 | 6 BMU fault Brand | Powertrain |
| Daewoo | P1B42 | Drive Motor 2 Control Module Hybrid/EV Battery Voltage Isolation Sensing Performance Brand | Powertrain |
| EOBD | P1B42 | Hybrid-Steuer-ECU 1 Brand | Powertrain |
| GM | P1B42 | Drive Motor 2 Control Module Hybrid/EV Battery Voltage Isolation Sensing Performance Brand | Powertrain |
| Holden | P1B42 | Drive Motor 2 Control Module Hybrid/EV Battery Voltage Isolation Sensing Performance Brand | Powertrain |
| Hyundai | P1B42 | No description available | Powertrain |
| Land Rover | P1B42 | Left Front Inner Sensor - Component Internal Failure is no longer stored in the Parking Assist Control Module Brand | Powertrain |
| Mitsubishi | P1B42 | FMCU Capacitor TEMP.SNSR high Brand | Powertrain |
| Opel | P1B42 | Drive Motor 2 Control Module Hybrid/EV Battery Voltage Isolation Sensing Performance Brand | Powertrain |
| Peugeot | P1B42 | Drive Motor 2 Control Module Hybrid/EV Battery Voltage Isolation Sensing Performance Brand | Powertrain |
| Proton | P1B42 | FMCU Capacitor TEMP.SNSR high Brand | Powertrain |
| Saab | P1B42 | drive motor 2 control module Hybrid/EV battery voltage isolation sensing performance Brand | Powertrain |
| MG (SAIC) | P1B42 | HV System Insulation Fault Brand | Powertrain |
| Suzuki | P1B42 | Hybrid Battery Cell Sensor Standard Voltage Error 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.
5Related codes
Browse Pxxx codes or P1B4xx codes.