B0158: Ambient Air Temperature Sensor Circuit
Standardized SAE J2012 code · B01xx codes
What does B0158 mean?
The HVAC control module has detected an implausible signal from the ambient air temperature sensor used by the climate control system. Symptoms include incorrect outside temperature display and erratic automatic climate behavior.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Symptoms
- Warning light or symbol related to the affected system
- Comfort or safety function impaired
Common causes
- High Ambient air temperature sensor failed
- Medium Wiring or connector fault
Likelihood is a general estimate across vehicles; your make and model may differ.
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