P2271 OBD-II: O2 Sensor Signal Biased/Stuck Rich
P2271 Severity
Will P2271 go away on its own?
Once the vehicle's onboard system no longer detects the issue, most codes will disappear on their own. If your vehicle still has this code, however, it should be properly diagnosed to avoid a more serious problem.
For a proper diagnosis, RepairPal Certified shops have the equipment, tools, and expertise.
Moderate severity codes might not threaten the vehicle's safety or functionality immediately, but you should still get it diagnosed within a reasonable time frame to keep your car running well.
What causes OBD-II fault code P2271?
The oxygen sensor measures the amount of oxygen in the exhaust between the engine and the catalytic converter. This sensor is supposed to fluctuate a minimum of 10 times per second within a specified voltage. If the engine's control module (PCM) does not see the correct fluctuations, the PCM will set code P2271.
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What Does P2271 Code Mean?
OBD-II Code P2271 is defined as a O2 Sensor Signal Biased/Stuck Rich
The oxygen sensor measures the amount of oxygen in the exhaust between the engine and the catalytic converter. This sensor is supposed to fluctuate a minimum of 10 times per second within a specified voltage. If the engine's control module (PCM) does not see the correct fluctuations, the PCM will set code P2271.
P2271 Symptoms
- Decreased engine performance
- Increased fuel consumption
Common Problems That Trigger the P2271 Code
- Clogged air filter
- Oxygen sensor failure
- Powertrain Control Module (PCM) failure
- Wiring issue
Common Repairs Needed for the P2271 Code
Ask our experts about P2271.
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