What Does P0968 Mean?
The TCM has detected an open circuit or general electrical fault in the Pressure Control Solenoid C (PCS-C) control circuit. PCS-C typically manages torque converter clutch (TCC) apply pressure or a tertiary pressure control function in multi-solenoid transmissions. An open circuit prevents the TCM from commanding the solenoid, resulting in default pressure behavior. The driver may notice TCC shudder, no lockup, or harsh shifts depending on the system design.
Safety Warning
Depending on PCS-C's role, the torque converter may not lock up, causing overheating at highway speeds, or shifts may be abnormally harsh. The transmission may enter limp mode. Minimize highway driving and have the vehicle repaired promptly.
Common Causes
35%
Failed PCS-C solenoid with an internally open coil winding
30%
Broken wire in the internal transmission harness at the PCS-C circuit
20%
Damaged or corroded transmission case pass-through connector on PCS-C pins
10%
Open in external harness between TCM and transmission connector
5%
TCM PCS-C driver circuit failure
Diagnostic Steps
1
Check transmission fluid level and condition — low or degraded fluid contributes to solenoid failure and should be addressed regardless of the electrical fault.
2
Disconnect the transmission case connector and measure PCS-C solenoid resistance — specification is typically 4-8 ohms. An open (OL) reading indicates a failed solenoid or broken internal harness wire.
3
If the solenoid reads open at the case connector, disconnect the internal harness from PCS-C and measure the solenoid independently to isolate whether the fault is in the solenoid or internal harness.
4
Check continuity of the external harness from the case connector back to the TCM connector. Inspect for damaged, corroded, or backed-out pins at both connectors.
5
If all wiring and the solenoid test within specification, use the scan tool to command PCS-C on and measure current draw at the TCM to verify the driver circuit.
Estimated Repair Cost
$200 - $1,500
Parts + labor, varies by vehicle and location
The TCM has detected an open circuit or general electrical fault in the Pressure Control Solenoid C (PCS-C) control circuit. PCS-C typically manages torque converter clutch (TCC) apply pressure or a tertiary pressure control function in multi-solenoid transmissions. An open circuit prevents the TCM ...
The most common cause of P0968 (Pressure Control Solenoid "C" Control Circuit/Open) is: Failed PCS-C solenoid with an internally open coil winding
Typical repair costs for P0968 range from $200 to $1,500, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Depending on PCS-C's role, the torque converter may not lock up, causing overheating at highway speeds, or shifts may be abnormally harsh. The transmission may enter limp mode. Minimize highway driving and have the vehicle repaired promptly.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0968 to identify the root cause.
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Quick Info
Category
Powertrain
System
Automatic Transmission / Transaxle
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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