PowertrainP1237
CautionSeverity: Caution - get it checked when you can
Boost pressure sensor circuit voltage low intermittently
Key terms: Boost pressure: extra air pressure made by a turbo or supercharger · 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 31
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P1237 | No description available | Powertrain |
| Mercedes-Benz | P1237 | No description available | Powertrain |
| BYD | P1237 | APP sensor plausibility Brand | Powertrain |
| Chery | P1237 | APP sensor plausibility Brand | Powertrain |
| Daewoo | P1237 | VSV 2 Circuit Brand | Powertrain |
| Daihatsu | P1237 | Pump valve abnormality Brand | Powertrain |
| DFFS | P1237 | Boost pressure sensor circuit voltage low intermittently Brand | Powertrain |
| DFFX | P1237 | APP sensor plausibility Brand | Powertrain |
| DFXK | P1237 | Fuel Injector for Cylinder 1 (N30): Open Circuit Brand | Powertrain |
| EOBD | P1237 | Luftmenge Brand | Powertrain |
| Geely | P1237 | APP sensor plausibility Brand | Powertrain |
| GM | P1237 | No description available | Powertrain |
| Great Wall | P1237 | APP sensor plausibility Brand | Powertrain |
| Hafei | P1237 | APP sensor plausibility Brand | Powertrain |
| Honda | P1237 | P1236 OR BOOST PRESSURE CONTROL MONITOR DEVIATION TOO BIG Brand | Powertrain |
| Hyundai | P1237 | No description available | Powertrain |
| Land Rover | P1237 | No description available | Powertrain |
| Mahindra | P1237 | No description available | Powertrain |
| Mitsubishi | P1237 | APS plausibility Brand | Powertrain |
| Perodua | P1237 | Pump valve abnormality Brand | Powertrain |
| Peugeot | P1237 | No description available | Powertrain |
| Porsche | P1237 | No description available | Powertrain |
| Proton | P1237 | APS plausibility Brand | Powertrain |
| Saab | P1237 | VSV 2 Circuit Brand | Powertrain |
| MG (SAIC) | P1237 | Turbocharger Boost Sensor Too High Engine Stopped Brand | Powertrain |
| Sprinter | P1237 | No description available | Powertrain |
| Subaru | P1237 | Exhaust Control Valve Solenoid Circuit Low Brand | Powertrain |
| Suzuki | P1237 | ETC FNCTN/CIRC-B2 Brand | Powertrain |
| Tata | P1237 | Boost Pressure Signal - Low Brand | Powertrain |
| Toyota | P1237 | Boost pressure sensor circuit voltage low intermittently Brand | Powertrain |
| Volkswagen | P1237 | Fuel Injector for Cylinder 1 (N30): Open Circuit 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 P1237 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| SsangYong | P123702 | Safety: gear request signal error Brand | Powertrain |
6Related codes
Browse Pxxx codes or P123xx codes.