Error code

OBD2 P0789

OBD2P0789
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Shift/Timing Solenoid Intermittent.

Severity

moderateCan drive, but shifting issues may occur.

Summary

P0789 indicates an intermittent issue with the shift/timing solenoid, which is part of the transmission control system.

Common Causes

  • Poor wiring or connection
  • Faulty shift/timing solenoid
  • ECM/PCM!TCM malfunction

Fixes

  • Inspect and repair wiring or connections related to the shift/timing solenoid.

FAQ

What does P0789 mean?

P0789 indicates an intermittent problem with the shift/timing solenoid in your transmission.

How do I fix P0789?

Start by inspecting and repairing any faulty wiring or connections related to the shift/timing solenoid. If necessary, replace the solenoid itself.

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.