OBD-II code · Powertrain (generic, extended)
P2DA3 Gear Shift Control Module B Overtemperature
Gear shift control module B reports junction temperature above protection threshold.
Is it safe to drive with P2DA3?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyAmbient temperature too high
- PossibleSustained high module load
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
- 1–5 h
- Emissions test
- Usually unaffected
- Parts involved
- Gear Shift Control Module B, Wiring Harness
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.