Shift Solenoid C
Diagnostic trouble code P0760 indicates that the Powertrain Control Module (PCM) or Transmission Control Module (TCM) has detected a malfunction in the transmission shift solenoid 'C' circuit. The computer sets this code when it detects an electrical fault (such as an open or short) in the solenoid circuit, or if the actual gear ratio does not match the expected gear ratio commanded by the solenoid.
Transmission codes should be addressed immediately to prevent internal transmission damage. Driving with a faulty shift solenoid can lead to severe drivability issues, stalling, or leaving the vehicle stranded.
Common symptoms
- Check Engine Light illuminated
- Transmission slipping or failing to shift into certain gears
- Harsh, delayed, or erratic shifting
- Decreased fuel economy
- Vehicle entering 'limp mode' (restricted to a single gear)
Likely causes
- Defective shift solenoid C
- Dirty or contaminated transmission fluid restricting hydraulic passages
- Low transmission fluid level
- Damaged, shorted, or open wiring and connectors in the solenoid circuit
- Blocked transmission filter or internal valve body issue
- Faulty Transmission Control Module (TCM) or PCM
What to check before replacing parts
Check the transmission fluid level and condition.
Look for: Fluid that is low, burnt, or heavily contaminated with debris, which indicates internal wear, a leak, or neglected maintenance.
Inspect the wiring harness and connectors leading to the transmission.
Look for: Corroded pins, melted wires, frayed insulation, or loose connections that could cause an open or short circuit to the solenoid.
Test shift solenoid C resistance using a digital multimeter.
Look for: Resistance readings that fall outside the manufacturer's specified range, indicating an internal failure of the solenoid coil.
Perform a functional test by applying direct power and ground to the solenoid (if accessible).
Look for: A lack of a crisp, audible 'click' when energized, which means the solenoid is mechanically stuck or failed.
Check the transmission valve body and perform a hydraulic pressure test.
Look for: Blocked fluid passages or low line pressure that prevents the solenoid from routing hydraulic fluid properly to engage the clutches.
This page explains the generic P0760 definition and is general reference information, not a diagnosis for your specific vehicle. Actual causes, severity, and repairs vary by make, model, engine, and mileage — always confirm with a scan tool and a qualified technician before replacing parts.
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