PowertrainP2237
CautionSeverity: Caution - get it checked when you can
Upstream oxygen sensor positive current control circuit open
Key terms: Oxygen sensor: measures oxygen in the exhaust gas · 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 35
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P2237 | No description available | Powertrain |
| BAIC Motor | P2237 | O2 Sensor Positive Current Control Circuit/Open Bank 1 Sensor 1 Brand | Powertrain |
| Mercedes-Benz | P2237 | No description available | Powertrain |
| BYD | P2237 | O2 Sensor Positive Current Control Circuit/Open Bank 1 Sensor 1 Brand | Powertrain |
| Chery | P2237 | Oxygen (Lambda) Sensor B1 S1: Pump Current Open Circuit Brand | Powertrain |
| Daewoo | P2237 | O2 Sensor Pump Current Circuit Open Brand | Powertrain |
| Daihatsu | P2237 | A/F sensor B1S1 broken Brand | Powertrain |
| DFFS | P2237 | The upstream oxygen sensor pump current circuit open Brand | Powertrain |
| DFFX | P2237 | upstream oxygen sensor line open circuit Brand | Powertrain |
| DFXK | P2237 | Oxygen (Lambda) Sensor B1 S1: Pump Current Open Circuit Brand | Powertrain |
| EOBD | P2237 | Iltføler positiv strømstyringskreds/åben række 1 føler 1 Brand | Powertrain |
| Geely | P2237 | Oxygen (Lambda) Sensor B1 S1: Pump Current Open Circuit Brand | Powertrain |
| GM | P2237 | O2 Sensor Positive Current Control Circuit/Open Bank 1 Sensor 1 Brand | Powertrain |
| Great Wall | P2237 | O2 Sensor Positive Current Control Circuit/Open Bank 1 Sensor 1 Brand | Powertrain |
| Hafei | P2237 | O2 Sensor Positive Current Control Circuit/Open Bank 1 Sensor 1 Brand | Powertrain |
| Holden | P2237 | HO2S Pump Current Control Circuit Sensor 1 Brand | Powertrain |
| Honda | P2237 | No description available | Powertrain |
| Hyundai | P2237 | No description available | Powertrain |
| Isuzu | P2237 | No description available | Powertrain |
| Land Rover | P2237 | No description available | Powertrain |
| Maserati | P2237 | Oxygen sensor pump cell current circuit/open (bank 1 sensor 1) Brand | Powertrain |
| Mitsubishi | P2237 | Lambda sensor positive current Brand | Powertrain |
| Opel | P2237 | O2 Sensor Positive Current Control Circuit/Open Bank 1 Sensor 1 Brand | Powertrain |
| Perodua | P2237 | A/F sensor B1S1 broken Brand | Powertrain |
| Peugeot | P2237 | No description available | Powertrain |
| Porsche | P2237 | No description available | Powertrain |
| Proton | P2237 | Lambda sensor positive current Brand | Powertrain |
| Saab | P2237 | O2 Sensor Positive Current Control Circuit/Open Bank 1 Sensor 1 Brand | Powertrain |
| MG (SAIC) | P2237 | O2 Sensor Positive Current Control Circuit/Open Bank 1 Sensor 1 Brand | Powertrain |
| Smart | P2237 | No description available | Powertrain |
| Sprinter | P2237 | No description available | Powertrain |
| Suzuki | P2237 | O2 Sensor (HO2S) Positive Current Control Circuit / Open (Sensor1) Brand | Powertrain |
| Tata | P2237 | Pumping Cell Brand | Powertrain |
| Toyota | P2237 | Upstream oxygen sensor positive current control circuit open Brand | Powertrain |
| Volkswagen | P2237 | Oxygen (Lambda) sensor B1 S1: pump current 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 3
These 7-character codes are manufacturer-specific variants of P2237 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| SsangYong | P223700 | WRAF open circuit failure on ip (compensated pump cell current) Brand | Powertrain |
| Mercedes-Benz | P223785 | Der Anschluss des Pumpstroms der Lambdasonde 1 (Zylinderreihe 1) hat einen elektrischen Fehler oder Unterbrechung. Es liegt ein Signal oberhalb des zulässigen Grenzwertes. Brand | Powertrain |
| Mercedes-Benz | P223786 | The pump current connection of oxygen sensor 1 (cylinder bank 1) has an electrical fault or open circuit. There is an incorrect signal. Brand | Powertrain |
6Related codes
Browse Pxxx codes or P223xx codes.