B0263
HVAC Air Mix Door 2 Circuit
A fault has been detected in the air mix door 2 actuator circuit, used in dual-zone HVAC systems for the passenger side.
A fault has been detected in the air mix door 2 actuator circuit, used in dual-zone HVAC systems for the passenger side.
Common causes
- high
Actuator motor failure
One of the most commonly reported causes for this code — check this first.
Typical part cost: $90-550
- medium
Mix door jammed
A plausible cause — test and verify before replacing parts.
Typical part cost: $90-550
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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 B0263 mean?
B0263 means "HVAC Air Mix Door 2 Circuit". It is a generic OBD-II code that points to a fault in the body.
What are the most common causes of B0263?
actuator motor failure; mix door jammed — 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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