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B1041 — Temperature Blend Door Actuator Fault
CautionHVACLimp to the next safe stop
Seen on: Heavy Truck
Temperature Blend Door Actuator Fault. Common causes: Blend door actuator failure.
Don't risk it — get a diesel tech on the truck.
Your code rides along, so nearby mechanics see the fault before they quote you.
How serious is it?
Caution. Limp to the next safe stop.
Most likely causes
- Blend door actuator failure
- Failed actuator motor
- binding blend door
First moves (roadside)
- Command actuator from cold to hot
- check for full travel
- replace actuator
FAQ
What does B1041 mean?
Temperature Blend Door Actuator Fault. Common causes: Blend door actuator failure.
How serious is B1041?
Caution — Limp to the next safe stop.
What's the most likely cause of B1041?
The most common cause is: Blend door actuator failure. Other possibilities include Failed actuator motor; binding blend door.
Can I keep driving with B1041?
Limp to the next safe stop. When in doubt, get a qualified mobile diesel tech on the truck before continuing.
Throwing this code right now?
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.