P2683Engine Coolant Bypass Valve A Control Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- For P2683 the drive of bypass valve A is shorted toward supply voltage or draws too much current. GM's 2016 Volt table has the VICM evaluate a short-to-high report from motor driver 1 while the valve is stopped or commanded to the high position; 16 failures out of 20 samples at 100 ms give a Type B fault. Volkswagen's 2014 Touareg Hybrid with the CGFA engine judges current instead and trips above roughly 2.2 to 4 A, which points to a jammed or shorted valve motor as well as wiring. Ford's 2019 hybrid summary uses a driver fault lasting over 5 s, and Ford's 2014 gasoline list shows P2683 with MIL. Coolant routing is then stuck, so heater output, warm-up or cooling of the affected circuit may change.
- What you may notice
- Check engine light on
- Changed heater output or warm-up time
- Temperature warning in severe cases
- Likely causes
- LikelyJammed valve or shorted valve motor drawing excess current
- PossibleDrive wire shorted to battery voltage
- RareFaulty motor driver in the control module
- 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.