P07844-5 Shift
- 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. P0784 names the 4–5 shift as the faulty one, up or down; slip in a steady gear is reported by the ratio codes instead. It only exists on transmissions with five or more gears. No manufacturer document available to us uses this code; GM's 2006 five-speed tables run the shift time check under P0780. High engine speed on the motorway from a missing fifth gear is typical.
- What you may notice
- Harsh, delayed or missing 4-5 shift
- Engine flare during the shift
- Warning lamp
- Limp mode
- Likely causes
- LikelyFluid level wrong, fluid worn or contaminated
- LikelyValve body, shift or pressure valve sticking
- PossibleWorn clutches or bands
- 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.