PowertrainP22AC
CautionSeverity: Caution - get it checked when you can
Oxygen sensor positive current control circuit low bank 1 sensor 2
Key terms: Oxygen sensor: measures oxygen in the exhaust gas · Control module: a small computer that runs one part of the car · Bank 1: the side of the engine containing cylinder 1 · 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 11
| Brand | Code | Description | System |
|---|---|---|---|
| Ashok Leyland CV | P22AC | Camshaft Position 'A' - Delay Excess, Slow Response (Bank 2) Brand | Powertrain |
| Daewoo | P22AC | No description available | Powertrain |
| EOBD | P22AC | Syresensor positiv strömstyrkrets låg bank 1 sensor 2 Brand | Powertrain |
| GM | P22AC | No description available | Powertrain |
| Holden | P22AC | HO2S Pump Current Control Circuit Low Voltage Sensor 2 Brand | Powertrain |
| Hyundai | P22AC | No description available | Powertrain |
| Land Rover | P22AC | O2 Sensor Positive Current Control Circuit Low Brand | Powertrain |
| Opel | P22AC | No description available | Powertrain |
| Peugeot | P22AC | No description available | Powertrain |
| Saab | P22AC | No description available | Powertrain |
| Toyota | P22AC | Oxygen sensor positive current control circuit low bank 1 sensor 2 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 6
These 7-character codes are manufacturer-specific variants of P22AC and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Hyundai | P22AC00 | If open or short to ground in signal circuit of rear lambda sensor is detected, ECM sets DTC Brand | Powertrain |
| SsangYong | P22AC11 | Rear wide band oxygen sensor short circuit to ground Brand | Powertrain |
| SsangYong | P22AC13 | Downstream wide area oxygen sensor Nernstsel ground circuit open Brand | Powertrain |
| SsangYong | P22ACF0 | Trimming resistance circuit short to ground when downstream wide area oxygen sensor cold Brand | Powertrain |
| SsangYong | P22ACFE | Downstream wide area oxygen sensor pumping cell circuit short to ground Brand | Powertrain |
| SsangYong | P22ACFF | Downstream wide area oxygen sensor when cold pumping cell circuit short to ground Brand | Powertrain |
6Related codes
Browse Pxxx codes or P22Axx codes.