OBD-II code · Powertrain (generic, extended)
P2DC9 Starter/Generator Excitation Current High
The starter/generator excitation current is above the expected window. Indicates winding short or driver fault.
Is it safe to drive with P2DC9?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyExcitation winding short
- PossibleOutput driver fault high
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–8 h
- Emissions test
- Usually unaffected
- Parts involved
- Starter Generator Excitation Circuit, Starter Generator
Related codes
- P2DC6Starter/Generator Phase Z Current Sensor Circuit Range/Performance
- P2DC7Starter/Generator Excitation Current
- P2DC8Starter/Generator Excitation Current Low
- P2DCAStarter/Generator Excitation Current Intermittent
- P2DCBStarter/Generator Phase X-Y-Z Current Sensor Correlation
- P2DCCStarter/Generator Position Sensor Correlation
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.