OBD-II code · Powertrain (generic)
P0918 Gear Shift Position Circuit Intermittent A
The gear shift position circuit A reports a circuit intermittent fault. Gear shift position feedback is unreliable on this channel.
Is it safe to drive with P0918?
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 with intermittent contact under vibration
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
- Gear Shift Position Sensor A, Wiring Harness, Tcm
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.