Code result
B0181
Front Blower Motor Circuit Low
Moderate severity
What it means
The HVAC control module has detected low voltage or a short to ground in the front blower motor circuit. The blower may run too slow or not at all.
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
Blower motor worn or seized
highOne of the most commonly reported causes for this code — check this first.
Blower resistor or power module failed
mediumA plausible cause — test and verify before replacing parts.
Wiring shorted to ground
lowLess common, but worth ruling out after the more likely causes.
Related help
Get the full diagnosis
Add your vehicle and see step-by-step repair help, recalls, and TSBs in Wrenchify.
Diagnose B0181 freeNo credit card required