OBD-II code · Body
B0159 Outside Temperature Sensor Range/Performance
The HVAC control module reports an out-of-range or implausible reading from the outside air temperature sensor. The displayed value may be stuck or impossibly high/low.
Is it safe to drive with B0159?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOutside temperature sensor failed
- PossibleWiring or connector fault
- Less likelySensor element aged beyond calibration window
Symptoms
- Warning light or symbol related to the affected system
- Comfort or safety function impaired
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–1 h
- Emissions test
- Usually unaffected
- Parts involved
- Outside Temperature Sensor, HVAC Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.