OBD-II code · Powertrain (generic, extended)
P2DC4 Starter/Generator Phase Y Current Sensor Circuit Range/Performance
The current sensor for starter/generator phase Y reports a circuit range/performance fault. Phase current measurement is unreliable.
Is it safe to drive with P2DC4?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyCurrent sensor offset drifted
- PossibleMagnetic offset from nearby parts
- Less likelySensor element aged beyond calibration window
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–6 h
- Emissions test
- Usually unaffected
- Parts involved
- Starter Generator Phase Y Current Sensor, Wiring Harness, Hybrid Control Module
Related codes
- P2DC2Starter/Generator Phase X Current Sensor Circuit Range/Performance
- P2DC6Starter/Generator Phase Z Current Sensor Circuit Range/Performance
- P2DC1Starter/Generator Phase X Current Sensor Circuit
- P2DC3Starter/Generator Phase Y Current Sensor Circuit
- P2DC5Starter/Generator Phase Z Current Sensor Circuit
- P2DC7Starter/Generator Excitation Current
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.