PowertrainP2245
CautionSeverity: Caution - get it checked when you can
O2 Sensor Reference Voltage Circuit Low (Bank 1 Sensor 1)
Key terms: Control module: a small computer that runs one part of the car · Bank 1: the side of the engine containing cylinder 1 · SAE J2012: the standard generic code list · 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 | P2245 | O2 Sensor Reference Voltage Circuit Low (Bank 1 Sensor 1) SAE | Powertrain |
| BAIC Motor | P2245 | O2 Sensor Reference Voltage Circuit Low Bank 1 Sensor 1 Brand | Powertrain |
| Mercedes-Benz | P2245 | O2 Sensor Reference Voltage Circuit Low (Bank 1 Sensor 1) SAE | Powertrain |
| BYD | P2245 | O2 Sensor Reference Voltage Circuit Low Bank 1 Sensor 1 Brand | Powertrain |
| Chery | P2245 | Oxygen sensor Reference Voltage Circuit Low Bank 1 Sensor 1 Brand | Powertrain |
| Daewoo | P2245 | O2 Sensor Reference Voltage Circuit Low Bank 1 Sensor 1 Brand | Powertrain |
| DFFS | P2245 | O2 Sensor Reference Voltage Circuit Low Bank 1 Sensor 1 Brand | Powertrain |
| DFFX | P2245 | O2 Sensor Reference Voltage Circuit Low Bank 1 Sensor 1 Brand | Powertrain |
| DFXK | P2245 | O2 Sensor Reference Voltage Circuit Low Bank 1 Sensor 1 Brand | Powertrain |
| EOBD | P2245 | Hapnikusensori viitepinge ahel madal, plokk 1, sensor 1 Brand | Powertrain |
| Geely | P2245 | O2 Sensor Reference Voltage Circuit Low Bank 1 Sensor 1 Brand | Powertrain |
| GM | P2245 | Sensor 1, banco 1 Brand | Powertrain |
| Great Wall | P2245 | O2 Sensor Reference Voltage Circuit Low Bank 1 Sensor 1 Brand | Powertrain |
| Hafei | P2245 | O2 Sensor Reference Voltage Circuit Low Bank 1 Sensor 1 Brand | Powertrain |
| Holden | P2245 | HO2S Reference Voltage Circuit Low Voltage Sensor 1 Brand | Powertrain |
| Honda | P2245 | O2 Sensor Reference Voltage Circuit Low (Bank 1 Sensor 1) SAE | Powertrain |
| Hyundai | P2245 | O2 Sensor Reference Voltage Circuit Low (Bank 1 Sensor 1) SAE | Powertrain |
| Isuzu | P2245 | O2 Sensor Reference Voltage Circuit Low (Bank 1 Sensor 1) SAE | Powertrain |
| Land Rover | P2245 | O2 Sensor Reference Voltage Circuit Low (Bank 1 Sensor 1) SAE | Powertrain |
| Mitsubishi | P2245 | Lambda sensor voltage low Brand | Powertrain |
| Opel | P2245 | Sensor 1, banco 1 Brand | Powertrain |
| Peugeot | P2245 | O2 Sensor Reference Voltage Circuit Low (Bank 1 Sensor 1) SAE | Powertrain |
| Porsche | P2245 | Lambdasonde Vor Kat Bank 1 Leitung Nernstspannung - min Brand | Powertrain |
| Proton | P2245 | Lambda sensor voltage low Brand | Powertrain |
| Saab | P2245 | Sensor 1, banco 1 Brand | Powertrain |
| MG (SAIC) | P2245 | O2 Sensor Reference Voltage Circuit Low Bank 1 Sensor 1 Brand | Powertrain |
| Smart | P2245 | O2 Sensor Reference Voltage Circuit Low (Bank 1 Sensor 1) SAE | Powertrain |
| Sprinter | P2245 | O2 Sensor Reference Voltage Circuit Low (Bank 1 Sensor 1) SAE | Powertrain |
| Tata | P2245 | O2 Sensor Reference Voltage Circuit Low Bank 1 Sensor 1 Brand | Powertrain |
| Toyota | P2245 | O2 Sensor Reference Voltage Circuit Low Bank 1 Sensor 1 Brand | Powertrain |
| Volkswagen | P2245 | Oxygen (Lambda) sensor B1 S1: reference voltage short to ground; 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 7
These 7-character codes are manufacturer-specific variants of P2245 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | P224500 | Der Anschluss der Referenzspannung der Lambdasonde 1 (Zylinderreihe 1) hat Kurzschluss nach Masse. Brand | Powertrain |
| SsangYong | P224500 | Short to ground on WRAF un signal Brand | Powertrain |
| Mercedes-Benz | P224511 | Der Anschluss der Referenzspannung der Lambdasonde 1 (Zylinderreihe 1) hat Kurzschluss nach Masse. Es liegt ein Kurzschluss nach Masse vor. Brand | Powertrain |
| Sprinter | P224511 | Der Anschluss der Referenzspannung der Lambdasonde 1 (Zylinderreihe 1) hat Kurzschluss nach Masse. Es liegt ein Kurzschluss nach Masse vor. Brand | Powertrain |
| SsangYong | P224511 | Front wide band oxygen sensor SR short circuit to ground Brand | Powertrain |
| SsangYong | P2245FE | Upstream wide area oxygen sensor virtual ground circuit short to ground Brand | Powertrain |
| SsangYong | P2245FF | Virtual ground circuit short to ground when upstream wide area oxygen sensor cold Brand | Powertrain |
6Related codes
Browse Pxxx codes or P224xx codes.