P0780Shift Error
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- Shift codes are a functional check of the gear change itself: the module compares the commanded shift with the speed trace and flags a shift that takes too long, is too short or abrupt, does not happen, flares or ties up. Ford does not use P0780–P0784 (its shift completion check feeds the solenoid codes), nor do GM's 2018–2025 tables. P0780 is the collective code when the faulty shift is not assigned to a gear. GM's 2006 Aisin-type five-speed counts five shifts that are too long, too short or tied up with fluid above 60 °C and lights the MIL at once; GM's Honda-built unit flags a 3–4 shift that stays in the lower ratio after two trips; Saab's 2010 Aisin six-speed counts ten faulty shifts without MIL, limits torque and keeps second and reverse. Nissan fixed P0780 on the 2021 Rogue CVT with new software.
- What you may notice
- Harsh, delayed or missing shifts
- Engine flare during shifts
- Warning lamp
- Limp mode with fixed gear, reduced power
- Likely causes
- LikelyFluid level wrong, fluid worn or contaminated
- LikelyValve body, shift or pressure valve sticking
- PossibleWorn clutches or bands (mechanical damage)
- PossibleModule software or shift adaption
- RareFaulty speed sensor signal
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €150 – €3,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.