B1005 — Blower Motor Circuit Short to Ground
Seen on: Heavy Truck
Blower Motor Circuit Short to Ground. Common causes: Blower motor circuit shorted.
Your code rides along, so nearby mechanics see the fault before they quote you.
How serious is it?
Serious. Power derate likely — plan to stop soon.
Most likely causes
- Blower motor circuit shorted
- Failed motor
- chafed wiring
First moves (roadside)
- Disconnect motor
- check if fault clears
- inspect harness for chafe
FAQ
Blower Motor Circuit Short to Ground. Common causes: Blower motor circuit shorted.
Serious — Power derate likely — plan to stop soon.
The most common cause is: Blower motor circuit shorted. Other possibilities include Failed motor; chafed wiring.
Power derate likely — plan to stop soon. When in doubt, get a qualified mobile diesel tech on the truck before continuing.
Find a mechanic or related guides
General diagnostic guidance for diesel engines (Cummins, Detroit, PACCAR, Volvo, Mack and more). Not a substitute for a scan-tool diagnosis on your specific truck.