P0741 — TCC stuck off
What it means: TCC stuck off.
How serious / can you keep driving: Serious. Power derate likely — plan to stop soon.
Check first: Line pressure test
Don't risk it — look up listed providers near you and give them this code when you call.
Listed providers nearest Macon, GA
Closest first. Tell them P0741 and what the truck is doing. RoadService.app lists these providers and does not employ them or carry out the repair.
- 0.0 mi away — based in Macon, GA · (478) 538-3245
- 0.0 mi away — based in Macon, GA · (478) 216-8330
- 0.0 mi away — based in Macon, GA · (706) 536-3376
What P0741 means
TCC stuck off. Common causes: Failed TCC|Low line pressure|Solenoid.
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
TCC stuck off. Common causes: Failed TCC|Low line pressure|Solenoid.
Serious — Power derate likely — plan to stop soon.
The most common cause is: Failed TCC. Other possibilities include Low line pressure; Solenoid.
Power derate likely — plan to stop soon. When in doubt, get a qualified mobile diesel tech on the truck before continuing.
Related codes
Codes that commonly appear alongside P0741, or share the same subsystem.
- Main shaft speed erratic (SPN 160 FMI 2)
- Input shaft speed erratic (SPN 161 FMI 2)
- Transmission output retarder speed erratic (SPN 162 FMI 2)
- Trans oil temperature very high (SPN 177 FMI 0)
- Trans oil temperature voltage high (SPN 177 FMI 3)
- Trans oil temperature voltage low (SPN 177 FMI 4)
- Engine speed signal abnormal update rate (SPN 190 FMI 9)
- Transmission output shaft speed erratic (SPN 191 FMI 2)
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.