OBD-II code · Powertrain (generic, extended)
P2805 Transmission Range Sensor A/B Correlation
The two range sensor channels A and B do not agree on the same gear selector position. Plausibility check fails after debounce.
Is it safe to drive with P2805?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyOne sensor mechanically misaligned
- PossibleAged switch contacts on one channel
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
- 1–4 h
- Emissions test
- Usually unaffected
- Parts involved
- Transmission Range Sensor A, Transmission Range Sensor B, Tcm
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.