B0160
In-Vehicle Temperature Sensor Circuit
The HVAC control module has detected an implausible signal from the in-vehicle temperature sensor — typically an aspirated sensor in the dashboard. Automatic climate control regulates cabin temperature using this signal.
- Check engine light: Not always
- Emissions related: No
- Repair difficulty: medium
Symptoms
- Warning light or symbol related to the affected system
- Comfort or safety function impaired
Common causes
Ordered by how often each turns out to be the cause.
- In-vehicle temperature sensor failedCommon
- Aspirator fan or duct blockedPossible
Parts involved
- In Vehicle Temperature Sensor
- Hvac Control Module
B0160 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.