PowertrainP0231
CautionSeverity: Caution - get it checked when you can
Fuel Pump Secondary Circuit Low
Key terms: Oxygen sensor: measures oxygen in the exhaust gas · Mass air flow sensor: measures the air going into the engine · SAE J2012: the standard generic code list · Powertrain: engine, transmission and emissions
1What it means in plain English
This code is in the powertrain range that covers fuel and air metering, over-temperature, overspeed and transmission over-temperature conditions.
2Common causes
- Dirty or faulty mass air flow sensor
- Vacuum or intake air leak
- Weak fuel pump or clogged fuel filter
- Faulty fuel injector
- Faulty oxygen sensor
- Wiring or connector fault
3Can I drive?
Do not assume this code is safe to ignore: some codes in this range affect engine safety systems. Have it diagnosed; if the engine is overheating, a red warning light is on, or the engine loses power or cuts out, stop safely and get professional help.
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 33
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P0231 | Differential Valve. Overvoltage Or Short Circuit To +Vbatt Brand | Powertrain |
| BAIC Motor | P0231 | Fuel Pump Secondary Circuit Low Brand | Powertrain |
| BMW | P0231 | Fuel Pump Secondary Circuit Low Brand | Powertrain |
| BYD | P0231 | Fuel pressure up solenoid Brand | Powertrain |
| Chery | P0231 | Fuel pressure up solenoid Brand | Powertrain |
| Daewoo | P0231 | Fuel Pump Secondary Circuit Low Brand | Powertrain |
| DFFS | P0231 | Fuel Pump Secondary Circuit Low Brand | Powertrain |
| DFFX | P0231 | Fuel pressure up solenoid Brand | Powertrain |
| DFXK | P0231 | Fuel Pump Secondary Circuit Low Brand | Powertrain |
| EOBD | P0231 | Fuel pump secondary circuit low Brand | Powertrain |
| Ford | P0231 | NOTE: If DTC(Diagnostic Trouble Codes) P0230 and are in continuous memory or KOEO(Key on engine off), repair these codes first Brand | Powertrain |
| Geely | P0231 | Fuel pressure up solenoid Brand | Powertrain |
| GM | P0231 | Fuel Pump Secondary Circuit Low Brand | Powertrain |
| Great Wall | P0231 | Fuel pressure up solenoid Brand | Powertrain |
| Hafei | P0231 | Fuel pressure up solenoid Brand | Powertrain |
| Holden | P0231 | Fuel Pump Control Circuit Low Voltage Brand | Powertrain |
| Honda | P0231 | Fuel Pump Secondary Circuit Low SAE | Powertrain |
| Hyundai | P0231 | Fuel Pump Secondary Circuit Low SAE | Powertrain |
| Isuzu | P0231 | Fuel Pump Secondary Circuit Low SAE | Powertrain |
| Land Rover | P0231 | Check for related DTCs -23 Brand | Powertrain |
| Mahindra | P0231 | Fuel Pump Secondary Circuit Low SAE | Powertrain |
| Maserati | P0231 | Fuel Pump Secondary Circuit Low Brand | Powertrain |
| Mazda | P0231 | NOTE: If DTC(Diagnostic Trouble Codes) P0230 and are in continuous memory or KOEO(Key on engine off), repair these codes first Brand | Powertrain |
| Mitsubishi | P0231 | Fuel pressure up solenoid Brand | Powertrain |
| Opel | P0231 | Fuel Pump Secondary Circuit Low Brand | Powertrain |
| Peugeot | P0231 | Fuel Pump Secondary Circuit Low SAE | Powertrain |
| Proton | P0231 | Fuel pressure up solenoid Brand | Powertrain |
| Saab | P0231 | Fuel Pump Secondary Circuit Low Brand | Powertrain |
| MG (SAIC) | P0231 | Fuel Pump Secondary Circuit Low Brand | Powertrain |
| Suzuki | P0231 | Fuel Pump Secondary Circuit Low Brand | Powertrain |
| Tata | P0231 | Fuel Pump Secondary Circuit Low Brand | Powertrain |
| Toyota | P0231 | High pressure oil pump secondary control circuit short to ground Brand | Powertrain |
| Volkswagen | P0231 | Fuel Pump Secondary Circuit: Low 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 P0231 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| SsangYong | P023100 | Fuel pump relay - open circuit to ground Brand | Powertrain |
| Mercedes-Benz | P02314A | Die Kommunikation mit dem Regen-/Lichtsensor hat Funktionsstörung - Falsche Komponente installiert Brand | Powertrain |
6Related codes
Browse Pxxx codes or P023xx codes.