Error code
OBD2 P0797
OBD2P0797
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Pressure Control Solenoid 'C' Stuck On.
Severity
moderateCan drive, but performance issues may worsen over time.
Summary
P0797 indicates that the transmission fluid pressure (TFP) solenoid C is stuck in the 'on' position, affecting the transmission's operation.
Symptoms
- Transmission slipping
- Delayed gear shifts
Common Causes
- Poor electrical connection to TFP solenoid C
- Faulty TFP solenoid C
- ECM/PCM or TCM malfunction
Diagnosis
- Check electrical connections to the TFP solenoid C for any signs of wear or damage.
- Use a diagnostic tool like Torque Pro to read live data and verify solenoid operation.
Fixes
- Replace faulty TFP solenoid C
FAQ
How do I know if the problem is with the wiring or the solenoid?
A diagnostic tool can help identify whether the issue lies with electrical connections or the solenoid itself.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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- P0706Transmission Range Sensor Circuit Range/Performance
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- P0710Transmission Fluid Temperature Sensor 'A' Circuit
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