P0819Up and Down Shift Switch to Transmission Range Correlation
- Generic OBD-II code · Powertrain
- How the car detects it
- P0819 is the plausibility check between the tap-up and tap-down switches and the range sensor: a shift request may only appear in the manual gate or in drive. If a tap switch reports in P, R or N, or taps arrive without the manual gate being detected, the correlation is broken. GM's 2019 tables and Ford's 2012 SelectShift run exactly this check but assign the fault to the switch concerned as P0815 or P0816; no manufacturer with its own P0819 is documented. Manual shifting would be disabled while automatic operation stays normal, without the MIL. Causes are a sticking tap switch, a misadjusted range sensor or selector cable, or the selector wiring.
- What you may notice
- Tap or manual mode not working
- Range display partly wrong
- No check engine lamp
- Likely causes
- LikelyTap switch sticking or faulty
- PossibleRange sensor or selector sensor misadjusted or faulty
- PossibleSelector cable misadjusted
- PossibleSelector wiring or connectors
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.