P013A
O2 Sensor Slow Response - Rich to Lean Bank 1 Sensor 2
Post-cat O2 sensor on bank 1 responds too slowly when mixture transitions from rich to lean. Sensor aging or contamination.
Post-cat O2 sensor on bank 1 responds too slowly when mixture transitions from rich to lean. Sensor aging or contamination.
Common causes
- high
Sensor aged
One of the most commonly reported causes for this code — check this first.
Typical part cost: $70-330
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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 P013A mean?
P013A means "O2 Sensor Slow Response - Rich to Lean Bank 1 Sensor 2". It is a generic OBD-II code that points to a fault in the fuel & air metering.
What are the most common causes of P013A?
sensor aged — 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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