B0184Rear Blower Motor Circuit
- Generic OBD-II code · Body
- How the car detects it
- No publicly available J2012 list includes B0184, and no maker documents it as a rear blower code. In Saab's 9-3 climate control the number belongs to the solar sensor: B0184 06 means that circuit is open or shorted to ground, and the system then regulates as on an overcast day. GM's Global A models report a rear blower speed circuit fault as B0208; GM bulletin PIT5383A lists B0208 among the HVAC codes of several 2015 GM models. Rear blowers serve the second and third rows of vans and large SUVs. In the 2011 Saab 9-5 an auxiliary blower module converts a PWM command into a motor voltage between 2 and 13 V, and a grounded, open or shorted command line stops the rear fan. A Hyundai patent notes that a stalled HVAC motor can draw several hundred mA. A related code is B0330.
- What you may notice
- No airflow from the rear roof or floor vents
- Rear seats stay warm in summer or cold in winter while the front is comfortable
- Likely causes
- LikelyLong harness run to the rear blower open or shorted, often at body joints or under trim
- PossibleAuxiliary blower control module or rear resistor failed
- PossibleRear blower motor worn or blocked by debris drawn in through the rear intake
- Repair
- Medium · Often possible to do yourself.Typical cost: €50 – €450
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.