Powertrain
generic / SAE
P2DA2
Gear Shift Control Module B Supply Voltage High
Supply voltage on the gear shift control module B is above the expected window.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberD / A2
Possible causes
- Alternator overvoltage high
- Wire shorted to B+ medium
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
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 200–1500 €
- Estimated time: 1–5 h
- Component: gear shift control module b
- Component: wiring harness
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012