PowertrainP1127
CautionSeverity: Caution - get it checked when you can
Signal implausible
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 29
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P1127 | Fuel Injection Pump 2. Low Flow Brand | Powertrain |
| BAIC Motor | P1127 | Exhaust temperature out of range, O2 sensor test not finished Brand | Powertrain |
| BMW | P1127 | Signal implausible Brand | Powertrain |
| BYD | P1127 | NO. 296 battery voltage sampling wire loop fault Brand | Powertrain |
| Chery | P1127 | Fuel Trim: Bank 1 (Mult): System too Rich Brand | Powertrain |
| Daewoo | P1127 | Oxygen Sensing Brand | Powertrain |
| Daihatsu | P1127 | Throttle motor power supply disconnect Brand | Powertrain |
| DFFS | P1127 | No description available | Powertrain |
| DFXK | P1127 | Fuel Trim: Bank 1 (Mult): System too Rich Brand | Powertrain |
| EOBD | P1127 | CO adjust Brand | Powertrain |
| Ford | P1127 | No description available | Powertrain |
| Geely | P1127 | Fuel Trim: Bank 1 (Mult): System too Rich Brand | Powertrain |
| GM | P1127 | No description available | Powertrain |
| Hyundai | P1127 | No description available | Powertrain |
| Isuzu | P1127 | No description available | Powertrain |
| Land Rover | P1127 | No description available | Powertrain |
| Mahindra | P1127 | No description available | Powertrain |
| Maserati | P1127 | No description available | Powertrain |
| Mazda | P1127 | No description available | Powertrain |
| Mitsubishi | P1127 | No description available | Powertrain |
| Nissan | P1127 | No description available | Powertrain |
| Perodua | P1127 | Throttle motor power supply disconnect Brand | Powertrain |
| Peugeot | P1127 | No description available | Powertrain |
| Porsche | P1127 | Lambdaregelabweichung (durch Kurztest) Bank 1: unterer Grenzwert unterschritten Brand | Powertrain |
| Proton | P1127 | No description available | Powertrain |
| Saab | P1127 | Oxygen Sensing Brand | Powertrain |
| Suzuki | P1127 | ETC MOT Brand | Powertrain |
| Toyota | P1127 | Long term fuel trim multiplicative, bank 1 system too rich Brand | Powertrain |
| Volkswagen | P1127 | bank 1 (Mult): system too rich; 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 6
These 7-character codes are manufacturer-specific variants of P1127 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | P112700 | No description available | Powertrain |
| SsangYong | P112700 | High voltage side high during Lower DC-DC Converter (LDC) operation Brand | Powertrain |
| SsangYong | P112701 | Charge indicator lamp (LED) error Brand | Powertrain |
| Peugeot | P112718 | No description available | Powertrain |
| Peugeot | P112744 | No description available | Powertrain |
| Peugeot | P112763 | No description available | Powertrain |
6Related codes
Browse Pxxx codes or P112xx codes.