OBD-II code · Powertrain (generic)
P086F Neutral Position Sensor A Not Learned
The neutral position sensor A reports a not learned fault. Verification of true neutral position is impaired.
Is it safe to drive with P086F?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyAdaptation lost after battery disconnect
- PossibleSensor replaced without learn procedure
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Neutral Position Sensor A, Wiring Harness, Tcm
Related codes
- P08B3Neutral Position Sensor B Not Learned
- P086CNeutral Position Sensor A Circuit Low
- P086DNeutral Position Sensor A Circuit High
- P086ENeutral Position Sensor A Circuit Intermittent/Erratic
- P0870Transmission Fluid Pressure Sensor/Switch C Circuit
- P0871Transmission Fluid Pressure Sensor/Switch C Circuit Range/Performance
- P0872Transmission Fluid Pressure Sensor/Switch C Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.