OBD-II code · Powertrain (generic)
P09A5 Gate Select Position Circuit B High
The gate select position circuit B reports a high fault. Selector gate position cannot be reliably measured on this channel.
Is it safe to drive with P09A5?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyPosition sensor failed
- PossibleWiring fault
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
- Gate Select Position Sensor B, Wiring Harness, Tcm
Related codes
- P0907Gate Select Position Circuit A High
- P09A9Gate Select Position Circuit C High
- P09A2Gate Select Position Circuit B Circuit
- P09A3Gate Select Position Circuit B Range/Performance
- P09A4Gate Select Position Circuit B Low
- P09A6Gate Select Position Circuit C Circuit
- P09A7Gate Select Position Circuit C Range/Performance
- P09A8Gate Select Position Circuit C Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.