P28C6 code meaning
Clutch A Motor Phase U-V-W Circuit/Open
Powertrain system Generic code P28xx codes Check engine light
What P28C6 means
P28C6 is the general circuit code for the three-phase supply of the clutch A motor and is set above all when a phase carries no current although the controller drives it, i.e. an open line. A brushless motor needs all three windings to produce torque; with one missing it stalls or runs roughly, and the gerotor pump behind it can no longer build the oil pressure that engages clutch A. Getrag fitted such ferrite motors as common parts for clutch actuation and shift drums in its pump-actuated DCT family. Typical faults are a backed-out terminal, a cracked solder joint in the actuator, or a broken wire near a moving bracket. P28C4/P28C5 instead describe a voltage pulled low or high. No manufacturer documents P28C6 publicly with values.
P28C6 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P28C6
- Clutch A does not engage, affected gears unavailable
- Transmission warning and possibly MIL
- Fault may come and go with vibration or temperature
Common causes of P28C6
- Most likelyTerminal pushed back or loose in the clutch A motor connector
- PossibleCracked solder joint or winding connection inside the actuator
- PossiblePhase wire broken at a bend or bracket
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Clutch motor aWiring harnessTCM
What each part of P28C6 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 8 | Area: transmission. |
| C6 | The exact fault in that area. |
What to do next
- Note P28C6 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 P28C6
What does P28C6 mean?
P28C6 means "Clutch A Motor Phase U-V-W Circuit/Open". P28C6 is the general circuit code for the three-phase supply of the clutch A motor and is set above all when a phase carries no current although the controller drives it, i.e. It is a generic code, so it means the same on every make.
Is it safe to drive with P28C6?
Drive gently and only to a workshop. With P28C6 the car can go into limp mode (reduced power) to protect itself.
Will P28C6 fail an emissions test?
Yes, it can. P28C6 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 P28C6 to fix?
Difficulty: hard. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P28C6 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.