PowertrainP3018
CautionSeverity: Caution - get it checked when you can
Hybrid/EV battery DC charging negative contactor control circuit
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 20
| Brand | Code | Description | System |
|---|---|---|---|
| Chery | P3018 | Valve for Exhaust Flap 1 (N321): Short to Ground Brand | Powertrain |
| Daewoo | P3018 | No description available | Powertrain |
| DFXK | P3018 | Valve for Exhaust Flap 1 (N321): Short to Ground Brand | Powertrain |
| EOBD | P3018 | Uitlaatklep 1 Brand | Powertrain |
| Ford | P3018 | No description available | Powertrain |
| Geely | P3018 | Valve for Exhaust Flap 1 (N321): Short to Ground Brand | Powertrain |
| GM | P3018 | No description available | Powertrain |
| Holden | P3018 | Hybrid/EV Battery DC Charging Negative Contactor Control Circuit Brand | Powertrain |
| Hyundai | P3018 | No description available | Powertrain |
| Land Rover | P3018 | No description available | Powertrain |
| Mazda | P3018 | No description available | Powertrain |
| Mitsubishi | P3018 | Each Cell VOLT. difference Brand | Powertrain |
| Opel | P3018 | No description available | Powertrain |
| Peugeot | P3018 | No description available | Powertrain |
| Proton | P3018 | Each Cell VOLT. difference Brand | Powertrain |
| Saab | P3018 | No description available | Powertrain |
| MG (SAIC) | P3018 | Control Module Internal Monitoring Power Disable Request MTC/IV Brand | Powertrain |
| Tata | P3018 | No Response Received By EMS From VICM ECU Brand | Powertrain |
| Toyota | P3018 | Hybrid/EV battery DC charging negative contactor control circuit Brand | Powertrain |
| Volkswagen | P3018 | Valve for exhaust flap 1 (N321): short to ground; Open or short to ground 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 P3018 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Volkswagen | P301800 | Exhaust door valve 1, short circuit to ground Brand | Powertrain |
6Related codes
Browse Pxxx codes or P301xx codes.