PowertrainP1820
CautionSeverity: Caution - get it checked when you can
Short circuit to positive
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 30
| Brand | Code | Description | System |
|---|---|---|---|
| BMW | P1820 | Short circuit to positive Brand | Powertrain |
| BYD | P1820 | Neutral switch 2 Brand | Powertrain |
| Chery | P1820 | Neutral switch 2 Brand | Powertrain |
| Daewoo | P1820 | Internal Mode Switch Circuit A Low Brand | Powertrain |
| Daihatsu | P1820 | Primary rotation sensor system Brand | Powertrain |
| DFFX | P1820 | Neutral switch 2 Brand | Powertrain |
| DFXK | P1820 | Pressure Control Valve 2 (N216): Short to Plus Brand | Powertrain |
| EOBD | P1820 | Suis Neutral 2 Brand | Powertrain |
| Geely | P1820 | Neutral switch 2 Brand | Powertrain |
| GM | P1820 | Internal Mode Switch Circuit A Low Brand | Powertrain |
| Great Wall | P1820 | Neutral switch 2 Brand | Powertrain |
| Hafei | P1820 | Neutral switch 2 Brand | Powertrain |
| Holden | P1820 | Even Gear Shaft Speed Sensor Circuit High Voltage Brand | Powertrain |
| Hyundai | P1820 | No description available | Powertrain |
| Isuzu | P1820 | No description available | Powertrain |
| Land Rover | P1820 | Dosing Pum P circuit defective Brand | Powertrain |
| Mahindra | P1820 | No description available | Powertrain |
| Mitsubishi | P1820 | Neutral switch 2 Brand | Powertrain |
| Opel | P1820 | Internal Mode Switch Circuit A Low Brand | Powertrain |
| Perodua | P1820 | Primary rotation sensor system Brand | Powertrain |
| Peugeot | P1820 | No description available | Powertrain |
| Porsche | P1820 | Drucksensor C Kurzschluss nach Plus oder Unterbrechung Brand | Powertrain |
| Proton | P1820 | Neutral switch 2 Brand | Powertrain |
| Saab | P1820 | Internal Mode Switch Circuit A Low Brand | Powertrain |
| MG (SAIC) | P1820 | Even Input Shaft Speed Sensor Circuit High Brand | Powertrain |
| Smart | P1820 | Frequency Counter Brand | Powertrain |
| Suzuki | P1820 | ENGINE SPEED SIG Brand | Powertrain |
| Tata | P1820 | No description available | Powertrain |
| Toyota | P1820 | Internal mode switch A circuit low voltage Brand | Powertrain |
| Volkswagen | P1820 | Pressure Control Valve 2 (N216): Short to Plus 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 P182xx codes.