B1250: Air Temperature Internal Sensor Circuit Failure
HighBodyBody Electronics
What does B1250 mean?
B1250 is a diagnostic trouble code indicating "Air Temperature Internal Sensor Circuit Failure". A sensor in the body electronics is reporting abnormal data or has lost communication with the ECU. Sensors can fail due to age, contamination, heat exposure, or wiring issues.
Common causes
- Faulty body electronics component
- Wiring or connector issue in the related circuit
- Failed sensor providing incorrect readings
- Software/calibration issue requiring ECU update
- Related component causing secondary fault
What should you do?
This is a significant issue that should be diagnosed and repaired soon. Avoid long trips or heavy driving until the problem is resolved. Continued driving may cause additional damage.
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Code B1250 can mean different things depending on your vehicle. TorqueBot gives you a diagnosis specific to your make, model, and year.