Code result
B0166
HVAC Discharge Air Temperature Sensor
Moderate severity
What it means
The HVAC control module reports an implausible signal from the discharge (vent outlet) air temperature sensor. This sensor verifies that the actual outlet air temperature matches the commanded value.
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
Discharge air temp 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.
Related help
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