OBD-II code · Powertrain (generic)
P08AF Neutral Position Sensor B Circuit Low
The neutral position sensor B reports a circuit low fault. Verification of true neutral position on the B channel is impaired.
Is it safe to drive with P08AF?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyPosition sensor failed
- PossibleWiring fault
- Less likelyConnector pins corroded - high contact resistance
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 B, Wiring Harness, Tcm
Related codes
- P086CNeutral Position Sensor A Circuit Low
- P08ACClutch Pedal Position Sensor A Not Learned
- P08ADNeutral Position Sensor B Circuit/Open
- P08AENeutral Position Sensor B Circuit Range/Performance
- P08B0Neutral Position Sensor B Circuit High
- P08B1Neutral Position Sensor B Circuit Intermittent/Erratic
- P08B2Neutral Position Sensor A/B Correlation
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.