OBD-II code · Body
B0181 Front Blower Motor Circuit Low
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 with B0181?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyBlower motor worn or seized
- PossibleBlower resistor or power module failed
- Less likelyWiring shorted to ground
Symptoms
- Warning light or symbol related to the affected system
- Comfort or safety function impaired
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Front Blower Motor, Blower Resistor Or Module, HVAC Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.