PowertrainP1871
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 24
| Brand | Code | Description | System |
|---|---|---|---|
| BAIC Motor | P1871 | Gear shift 1 higher reference point Brand | Powertrain |
| Mercedes-Benz | P1871 | No description available | Powertrain |
| BMW | P1871 | Short circuit to positive Brand | Powertrain |
| Chery | P1871 | Transmission Mount Valve 2 (N263): Short to Plus Brand | Powertrain |
| Daewoo | P1871 | Undefined Gear Ratio Brand | Powertrain |
| DFFS | P1871 | EMOP control oil temperature high Brand | Powertrain |
| DFXK | P1871 | Transmission Mount Valve 2 (N263): Short to Plus Brand | Powertrain |
| EOBD | P1871 | CAN sakaru Brand | Powertrain |
| Geely | P1871 | Transmission Mount Valve 2 (N263): Short to Plus Brand | Powertrain |
| GM | P1871 | Undefined Gear Ratio Brand | Powertrain |
| Holden | P1871 | Solenoid Valve Supply Voltage 1 Brand | Powertrain |
| Land Rover | P1871 | 机械分动箱 4x4 开关电路对蓄电池短路 Brand | Powertrain |
| Mitsubishi | P1871 | APS signal fail Brand | Powertrain |
| Opel | P1871 | Undefined Gear Ratio Brand | Powertrain |
| Peugeot | P1871 | No description available | Powertrain |
| Porsche | P1871 | Diagnose-informatie - PDK P1870/ /P1872 Brand | Powertrain |
| Proton | P1871 | APS signal fail Brand | Powertrain |
| Saab | P1871 | Undefined Gear Ratio Brand | Powertrain |
| MG (SAIC) | P1871 | Open Pin Error in Actuator Power Supply for Odd Clutch, Shifter 1 and Multiplexer 1 Solenoids Brand | Powertrain |
| Smart | P1871 | No description available | Powertrain |
| Sprinter | P1871 | No description available | Powertrain |
| Subaru | P1871 | Front Right ABS Sensor Signal Brand | Powertrain |
| Toyota | P1871 | Electromagnetic oil pump (EMOP) control oil temperature high Brand | Powertrain |
| Volkswagen | P1871 | Transmission mount valve 2 (N263): short to plus; Mechanical failure 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 2
These 7-character codes are manufacturer-specific variants of P1871 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | P187100 | Status of diagnostic fault check of CSERS monitoring for EGR ratio Brand | Powertrain |
| Sprinter | P187100 | Status of diagnostic fault check of CSERS monitoring for EGR ratio Brand | Powertrain |
6Related codes
Browse Pxxx codes or P187xx codes.