P2277 OBD-II: O2 Sensor Signal Biased/Stuck Rich
P2277 Severity
Will P2277 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 P2277?
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 P2277.
Ask our experts about P2277.
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