P2770Torque Converter Clutch Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P2770 flags a high level on the torque converter clutch circuit, meaning a short to the battery supply on the TCC solenoid or its wiring. Ford documents it in the 2024 OBD summary for the 6R80, 6R140, 10R60/10R80 and the 8F front-drive families: P2770 corresponds to UDS P0740_12, while P0740_13 covers an open line and P2769 (P0740_11) a short to ground. One table even shows P0744, the older code for the same short to power, beside P2770 under the same failure byte. The electrical check runs at all times; the stated monitoring duration for an electrical fault is 5 seconds. The TCM then keeps the converter unlocked, so cruising rpm and fluid temperature rise and fuel use worsens. A harness rubbing against a powered wire or a damaged case connector are the usual finds.
- What you may notice
- MIL on
- No converter lockup, higher rpm at highway speed
- Higher fuel consumption and fluid temperature
- Likely causes
- LikelyTCC circuit chafed against a powered wire
- PossibleDamaged or contaminated transmission case connector
- PossibleInternal short in the TCC solenoid
- RareFaulty TCC output driver in the TCM/PCM
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €60 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.