OBD-II code · Powertrain (generic, extended)
P2770 Torque Converter Clutch Solenoid Circuit High
The voltage on the TCC solenoid control circuit is above the calibrated maximum. Either the wire is shorted to battery voltage or the solenoid coil is open.
Is it safe to drive with P2770?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyControl wire shorted to battery
- PossibleOpen solenoid coil
- Less likelyConnector pins corroded - high contact resistance
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1.5–6 h
- Emissions test
- Usually unaffected
- Parts involved
- Tcc Solenoid, Tcm, Transmission Wiring
Related codes
- P276DElectric/Auxiliary Transmission Fluid Pump B Motor Current
- P276EElectric/Auxiliary Transmission Fluid Pump B Motor Current Low
- P276FElectric/Auxiliary Transmission Fluid Pump B Motor Current High
- P2771Four Wheel Drive (4WD) Low Switch Circuit
- P2772Four Wheel Drive (4WD) Low Switch Circuit Range/Performance
- P2773Four Wheel Drive (4WD) Low Switch Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.