P2682Engine Coolant Bypass Valve A Control Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P2682 narrows the drive fault of bypass valve A to the low side: the output is pulled toward ground when it should not be. In GM's 2016 table for the second-generation Volt, the VICM sets it when motor driver 1 reports a short to low while the valve is commanded to the low position, with 4 failures in 5 samples and Type B. Ford's 2019 hybrid summary flags P2682 after a driver fault longer than 5 s, and it must be present before the stuck-open test P26AB can finish. Volkswagen's 2014 Touareg Hybrid (CGFA) uses a signal voltage below about 2.8 to 3.2 V. Ford's 2014 gasoline list marks it as a MIL code. The valve stays where it was, so warm-up or heat distribution may suffer.
- What you may notice
- Check engine light on
- Weak cabin heat or slow warm-up
- Possible overheating warning under load
- Likely causes
- LikelyDrive wire to the valve motor shorted to ground
- PossibleInternal short in the valve motor or electronics
- RareCoolant or water corrosion in the valve plug
- 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: €80 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.