PowertrainP1138
CautionSeverity: Caution - get it checked when you can
Short circuit to negative
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 25
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P1138 | No description available | Powertrain |
| BAIC Motor | P1138 | Lack Of HO2S12 Switches - Sensor Indicates Rich Brand | Powertrain |
| BMW | P1138 | Short circuit to negative Brand | Powertrain |
| BYD | P1138 | NO. 313 battery voltage sampling wire loop fault Brand | Powertrain |
| Chery | P1138 | Fuel Trim: Bank 2 (Add): System too Lean Brand | Powertrain |
| Daewoo | P1138 | Oxygen Sensing Brand | Powertrain |
| DFFS | P1138 | The accelerator pedal is stuck within the effective range Brand | Powertrain |
| DFXK | P1138 | Fuel Trim: Bank 2 (Add): System too Lean Brand | Powertrain |
| EOBD | P1138 | Druckregler Brand | Powertrain |
| Ford | P1138 | DTCs(Diagnostic Trouble Codes) P0136 or P1137 or Brand | Powertrain |
| Geely | P1138 | Rear O2 Sensor System Rich-DFCO Brand | Powertrain |
| GM | P1138 | No description available | Powertrain |
| Great Wall | P1138 | P2A01 Rear oxygen too rich while decelerate to cut off fuel Brand | Powertrain |
| Holden | P1138 | HO2S Circuit Sensor 1 Brand | Powertrain |
| Isuzu | P1138 | No description available | Powertrain |
| Land Rover | P1138 | No description available | Powertrain |
| Mahindra | P1138 | No description available | Powertrain |
| Mazda | P1138 | DTCs(Diagnostic Trouble Codes) P0136 or P1137 or Brand | Powertrain |
| Opel | P1138 | Oxygen Sensing Brand | Powertrain |
| Peugeot | P1138 | No description available | Powertrain |
| Porsche | P1138 | Drosselklappensteller Potentiometer 1: oberer Grenzwert überschritten Brand | Powertrain |
| Saab | P1138 | Oxygen Sensing Brand | Powertrain |
| Suzuki | P1138 | Fuel Pres Reg Crt Stop Cmnd Brand | Powertrain |
| Tata | P1138 | Oxygen Sensor 1 - Bank 1 - Oxygen Sensor Overheat Condition Brand | Powertrain |
| Volkswagen | P1138 | Fuel trim: bank 2 (Add): system too Lean; No signal/communication 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 4
These 7-character codes are manufacturer-specific variants of P1138 and may be reported by some scan tools.
6Related codes
Browse Pxxx codes or P113xx codes.