B0250
HVAC Air Temperature Internal Sensor Circuit
The HVAC controller has detected a fault in the internal cabin air temperature sensor circuit, used to regulate climate control output.
The HVAC controller has detected a fault in the internal cabin air temperature sensor circuit, used to regulate climate control output.
Common causes
- high
Sensor element failure
One of the most commonly reported causes for this code — check this first.
Typical part cost: $40-220
- medium
Aspirator/blower fan dirty
A plausible cause — test and verify before replacing parts.
Typical part cost: $40-220
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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 B0250 mean?
B0250 means "HVAC Air Temperature Internal Sensor Circuit". It is a generic OBD-II code that points to a fault in the body.
What are the most common causes of B0250?
sensor element failure; aspirator/blower fan dirty; open wiring to sensor — 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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