P0968
UniversalPressure Control Solenoid C Control Circuit / Open
High SeverityThis code indicates an electrical issue within the control circuit for the Pressure Control Solenoid C in the transmission, specifically that the circuit is open. This electrical problem prevents the solenoid from correctly regulating transmission fluid pressure, leading to noticeable shifting problems.
⚠️ Before You Begin (Safety First)
Always disconnect the battery before performing any electrical work on your vehicle. Transmission fluid can be hot and cause burns; wear appropriate protective gear. Ensure the vehicle is securely supported on jack stands if working underneath.
Common Symptoms
- Check Engine Light illuminated
- Harsh or erratic transmission shifts
- Delayed gear engagement
- Transmission slipping between gears
- Transmission entering 'limp mode'
- Poor fuel economy
Common Causes
- Open circuit in the wiring harness to the Pressure Control Solenoid C (frayed, broken, or corroded wire)
- Loose or corroded electrical connector at the solenoid or Transmission Control Module (TCM)
- Faulty or damaged Pressure Control Solenoid C
- Internal transmission fluid contamination affecting solenoid operation (less common for 'open circuit' but can contribute to solenoid failure)
- Faulty Transmission Control Module (TCM) (rare)
Frequently reported on: General/Universal, Ford F-Series 2008-2014, Chevrolet Silverado 2007-2013, Dodge Ram 2009-2015
Diagnostic Steps
- Visually inspect the wiring harness and connectors leading to the transmission and specifically to the Pressure Control Solenoid C for any signs of damage, corrosion, or looseness.
- Using a multimeter, test for continuity and resistance in the solenoid's circuit and the solenoid itself. Consult your vehicle's service manual for specific resistance values.
- Check the transmission fluid level and condition; ensure it is at the correct level and free from burning smells or excessive debris.
- If the solenoid is external and confirmed faulty, replace the Pressure Control Solenoid C following manufacturer's guidelines.
- Clear the OBD-II code with a scan tool and perform a test drive to see if the code returns and symptoms are resolved.
👨🔧 When to Call a Professional
If basic wiring inspection and solenoid resistance testing do not reveal the fault, or if the solenoid is internal to the transmission, it is best to consult a professional transmission specialist for further diagnosis and repair to avoid costly damage.
Commonly Asked Questions
What does an 'open circuit' mean for P0968?
An 'open circuit' means there is a break in the electrical path to the Pressure Control Solenoid C, preventing electricity from flowing and the solenoid from operating correctly.
Can I drive my car with a P0968 code?
While you might be able to drive, it is not recommended as it can lead to severe transmission damage due to improper shifting and pressure regulation. Drive as little as possible or not at all.
Where is Pressure Control Solenoid C usually located?
The Pressure Control Solenoid C is typically located inside the transmission valve body. In some vehicles, it might be externally mounted on the transmission case.
Is P0968 an expensive repair?
The cost varies significantly. If it's a simple wiring fix, it's inexpensive. If the solenoid needs replacement and is internal to the transmission, labor costs can be high, making it a potentially expensive repair.
Can low transmission fluid cause P0968?
While low fluid can cause other transmission issues and indirectly stress solenoids, an 'open circuit' specifically points to an electrical fault, not directly a fluid level issue. However, always check fluid as a first step for any transmission code.