P2C65
O2 Sensor Out of Range During Deceleration Bank 1 Sensor 3
The wide-band oxygen sensor on bank 1 sensor 3 reports a out of range during deceleration condition. Lambda regulation accuracy is impaired.
The wide-band oxygen sensor on bank 1 sensor 3 reports a out of range during deceleration condition. Lambda regulation accuracy is impaired.
Common causes
- high
Sensor unable to follow oxygen spike during fuel cut
One of the most commonly reported causes for this code — check this first.
Typical part cost: $170-770
- medium
Sensor response time degraded with age
A plausible cause — test and verify before replacing parts.
Typical part cost: $170-770
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P2C65 mean?
P2C65 means "O2 Sensor Out of Range During Deceleration Bank 1 Sensor 3". It is a generic OBD-II code that points to a fault in the auxiliary emission controls.
What are the most common causes of P2C65?
sensor unable to follow oxygen spike during fuel cut; sensor response time degraded with age — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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