Error code
OBD2 P2778
OBD2P2778
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Upshift Switch Circuit Intermittent/Erratic.
Severity
moderateCan drive but may experience shifting problems.
Summary
P2778 indicates an issue with the transmission gear selection switch's upshift circuit, which is intermittent or erratic in its operation.
Common Causes
- Poor connection
- Wiring issues
- Faulty transmission gear selection switch
Fixes
- Inspect and repair wiring connections, replace faulty upshift switch if necessary.
FAQ
What does P2778 mean?
P2778 indicates an issue with the transmission gear selection switch's upshift circuit that is intermittent or erratic.
How do I fix it?
Inspect and repair any wiring issues, and replace the faulty upshift switch if needed.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
More OBD2 codes
- P2700Transmission Friction Element 'A' Apply Time Range/Performance
- P2701Transmission Friction Element 'B' Apply Time Range/Performance
- P2702Transmission Friction Element 'C' Apply Time Range/Performance
- P2703Transmission Friction Element 'D' Apply Time Range/Performance
- P2704Transmission Friction Element 'E' Apply Time Range/Performance
- P2705Transmission Friction Element 'F' Apply Time Range/Performance
- P2706Shift Solenoid 'F'
- P2707Shift Solenoid 'F' Performance or Stuck Off
- P2708Shift Solenoid 'F' Stuck On
- P2709Shift Solenoid 'F' Electrical
- P2710Shift Solenoid 'F' Intermittent
- P2711Unexpected Mechanical Gear Disengagement