P0958Auto Shift Manual Mode Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- How the car detects it
- The manual mode signal from the selector lever reads above its expected range. Possible causes are a short to supply voltage or, with an internally pulled-up input, an open circuit or missing switch ground that keeps the line high. A Nissan patent explains how two separately wired contacts let the control unit recognise a break in the manual mode switch, and a Hyundai patent shows the lever microswitch that reports the change from D to M. No manufacturer documents this exact code publicly; Hyundai's mode fault is only documented as P0955. CARB requires circuit checks on such inputs. P0957 is the low side, P0959 the intermittent variant. Usually the gearbox stays in automatic mode.
- What you may notice
- Manual gate has no effect, gearbox stays in automatic mode
- Warning lamp depending on manufacturer
- No manual gear shown on the display
- Likely causes
- LikelyBroken mode signal wire or disconnected shifter plug
- PossibleMissing ground at the mode switch
- PossibleMode signal shorted to a voltage-carrying wire
- Repair
- Medium · Often possible to do yourself.Typical cost: €40 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.