Code result
B0159
Outside Temperature Sensor Range/Performance
Moderate severity
What it means
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?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Outside temperature sensor failed
highOne of the most commonly reported causes for this code — check this first.
Wiring or connector fault
mediumA plausible cause — test and verify before replacing parts.
Sensor element aged beyond calibration window
lowLess common, but worth ruling out after the more likely causes.
Related help
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