What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P2271secondary HO2S [sensor 2] circuit signal stuck richP2271O2 SENSOR 1/2 OUT OF RANGE LOWP2271secondary HO2S [sensor 2] circuit signal stuck richManufacturer communications
6Original wording in English
ACURA
Reported code forms P2271
Servicenews article - Is the MIL on with DTC P2271 (secondary HO2S [sensor 2] circuit signal stuck rich)? What's likely causing this is the PCM is misinterpreting the A/F sensor (sensor 1) signals, causing the PCM to…
ACURA
Reported code forms P2271
Tech line summary article - Is the MIL on with DTC P2271 (secondary HO2S [sensor 2] circuit signal stuck rich)? What's likely causing this is the PCM is misinterpreting the A/F sensor (sensor 1) signals, causing the PCM…
HONDA
Reported code forms P2271
Tech line summary article - Is the MIL on with DTC P2271 (secondary HO2S [sensor 2] circuit signal stuck rich)? What's likely causing this is the PCM is misinterpreting the A/F sensor (sensor 1) signals, causing the PCM…
LAND ROVER
Reported code forms P2271
"ISSUE: THE CUSTOMER MAY OBSERVE A MIL IN THE INSTRUMENT CLUSTER RELATING TO THE ENGINE SYSTEM (CHECK ENGINE LIGHT) AND ONE OR MORE CODES STORED IN THE PCM RELATING TO HEATED OXYGEN SENSOR (HO2S) IN THE EXHAUST SYSTEM.…
DODGE
Reported code forms P2271
Flash: Diagnostic and System Improvements This bulletin involves selectively erasing and reprogramming the Engine Control Module (ECM) with new software. Pickup trucks equipped with a 6.7L Cummins diesel have software…
VOLKSWAGEN
Reported code forms P2271
VOLKSWAGEN: IMPROVED ECM SOFTWARE CALIBRATION TO STABILIZE 02 SENSOR DIAGNOSIS. 02 SENSOR DIAGNOSIS TOO SENSITIVE AND CONTAMINATION OF THE 02 SENSOR CAUSING MIL ON WITH DTCS P0136, P0139, P2271, P013B AND/OR P320C. *PE
Check vehicle applicability
20A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Acura | TSX | 2008 |
| Acura | TSX | 2007 |
| Dodge | RAM 2500 | 2012 |
| Dodge | RAM 3500 | 2012 |
| Honda | ACCORD | 2007 |
| Honda | ACCORD | 2006 |
| Honda | CR-V | 2006 |
| Honda | CR-V | 2005 |
| Honda | ELEMENT | 2008 |
| Honda | ELEMENT | 2007 |
| Honda | S2000 | 2008 |
| Honda | S2000 | 2007 |
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.