OBD-II code · Powertrain (generic, extended)
P2D51 Air Assisted Injector Control Circuit
The control circuit of the air-assisted fuel injector reports a generic fault. Air-assist atomization for cold-start or low-load conditions cannot be commanded.
Is it safe to drive with P2D51?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyWiring or connector fault
- PossibleAir-assist actuator failed
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–5 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Air Assisted Injector, Wiring Harness, Ecm
Related codes
- P2D4EHybrid/EV Battery Pack J Over Temperature
- P2D4FHybrid/EV Battery Pack K Over Temperature
- P2D50Hybrid/EV Battery Pack L Over Temperature
- P2D52Hybrid/EV Battery Pack Coolant Temperature Sensor C Circuit
- P2D53Hybrid/EV Battery Pack Coolant Temperature Sensor C Circuit Range/Performance
- P2D54Hybrid/EV Battery Pack Coolant Temperature Sensor C Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.