P0968 code meaning
Pressure Control Solenoid C Control Circuit/Open
Powertrain system Generic code P09xx codes Check engine light
What P0968 means
Open circuit in the driver of pressure control solenoid C. GM's 8-speed assigns C to clutch 3 (C13567), the 9-speed to CB38 and the 10-speed to C23457910; an impedance above 200 kOhm for 0.3 s counts as open and sets a Type A code after one trip. In GM's dual-clutch gearbox, C is the redundant shutdown valve of the odd clutch, checked for open load while its output is switched off and confirmed after 150 ms. GM six-speeds report an open C solenoid as P0971, and neither Ford's summaries nor the Allison 1000 tables list C codes. CARB requires circuit checks on transmission output components. Low and high are P0970/P0971, performance P0969; the usual result is a lost gear range or limp mode.
P0968 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor1 to 5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0968
- MIL and transmission warning on
- Gears that need clutch C are unavailable
- Limp mode in a fixed gear
Common causes of P0968
- Most likelyOpen solenoid coil
- PossiblePoor contact at the transmission connector or internal harness
- PossibleBroken control wire
- Less likelyFaulty output stage in the control module
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Pressure control solenoid cWiring harnessTCM
What each part of P0968 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 9 | Area: transmission. |
| 68 | The exact fault in that area. |
What to do next
- Note P0968 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 P0968
What does P0968 mean?
P0968 means "Pressure Control Solenoid C Control Circuit/Open". Open circuit in the driver of pressure control solenoid C. It is a generic code, so it means the same on every make.
Is it safe to drive with P0968?
Drive gently and only to a workshop. With P0968 the car can go into limp mode (reduced power) to protect itself.
Will P0968 fail an emissions test?
Yes, it can. P0968 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 P0968 to fix?
Difficulty: hard. A typical repair takes 1 to 5 hours of work. This is a job for a workshop.
Will P0968 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.