P2682 code meaning
Engine Coolant Bypass Valve A Control Circuit Low
Powertrain system Generic code P26xx codes Check engine light
What P2682 means
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.
P2682 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.5 to 2.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2682
- Check engine light on
- Weak cabin heat or slow warm-up
- Possible overheating warning under load
Common causes of P2682
- Most likelyDrive wire to the valve motor shorted to ground
- PossibleInternal short in the valve motor or electronics
- Less likelyCoolant or water corrosion in the valve plug
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Coolant bypass valve aSolenoidWiring harness
What each part of P2682 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 6 | Area: computer (engine control module) and output circuits. |
| 82 | The exact fault in that area. |
What to do next
- Note P2682 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2682
What does P2682 mean?
P2682 means "Engine Coolant Bypass Valve A Control Circuit Low". P2682 narrows the drive fault of bypass valve A to the low side: the output is pulled toward ground when it should not be. It is a generic code, so it means the same on every make.
Is it safe to drive with P2682?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will P2682 fail an emissions test?
Yes, it can. P2682 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2682 to fix?
Difficulty: medium. A typical repair takes 0.5 to 2.5 hours of work. This is a job for a workshop.
Will P2682 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.