What causes a P0796 code?

P0796 can be triggered by several issues — see the verified probable causes and step-by-step diagnostics shared by mechanics and owners on OBDIY.

Can I drive with a P0796 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P0796 active.

Follow the step-by-step diagnostic on this page, then read the verified fixes contributed by other Heavy Truck owners — the answer marked "Verified Cause" worked for the original poster.

OBDIY

OBD-II

P0796

Transmission Control Pressure Solenoid 'C' Performance or Stuck Off

What it means

The Transmission Control Module (TCM) has detected that pressure control solenoid 'C' is not performing within specified parameters, typically indicating a hydraulic blockage or mechanical failure in the solenoid circuit.