Home › Fault codes › P0741
P0741 — TCC stuck off
SerioustransmissionPower derate likely — plan to stop soon
TCC stuck off. Common causes: Failed TCC|Low line pressure|Solenoid.
Don't risk it — get a diesel tech on the truck.
Look up listed providers near you and give them this code when you call.
How serious is it?
Serious. Power derate likely — plan to stop soon.
Most likely causes
- Failed TCC
- Low line pressure
- Solenoid
First moves (roadside)
- Line pressure test
- Solenoid check
FAQ
What does P0741 mean?
TCC stuck off. Common causes: Failed TCC|Low line pressure|Solenoid.
How serious is P0741?
Serious — Power derate likely — plan to stop soon.
What's the most likely cause of P0741?
The most common cause is: Failed TCC. Other possibilities include Low line pressure; Solenoid.
Can I keep driving with P0741?
Power derate likely — plan to stop soon. 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.