OBD-II code · Powertrain (generic)
P02D3 Cylinder 4 Fuel Injector A Offset Learning At Max Limit
The per-cylinder injector offset on cylinder 4 has reached its maximum value — the injector is delivering significantly less fuel than the calibrated reference, and the controller cannot trim it any further.
Is it safe to drive with P02D3?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyInjector under-delivering
Symptoms
- Check engine light on
- Misfire or rough idle on the affected cylinder
- Increased fuel consumption
- Possible fuel smell or smoke from exhaust
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Likely to fail
- Parts involved
- Fuel Injector
Related codes
- P02CDCylinder 1 Fuel Injector A Offset Learning At Max Limit
- P02CFCylinder 2 Fuel Injector A Offset Learning At Max Limit
- P02D1Cylinder 3 Fuel Injector A Offset Learning At Max Limit
- P02D5Cylinder 5 Fuel Injector A Offset Learning At Max Limit
- P02D7Cylinder 6 Fuel Injector A Offset Learning At Max Limit
- P02D9Cylinder 7 Fuel Injector A Offset Learning At Max Limit
- P02DBCylinder 8 Fuel Injector A Offset Learning At Max Limit
- P02DDCylinder 9 Fuel Injector A Offset Learning At Max Limit
- P02DFCylinder 10 Fuel Injector A Offset Learning At Max Limit
- P232CCylinder 11 Fuel Injector A Offset Learning At Max Limit
- P232ECylinder 12 Fuel Injector A Offset Learning At Max Limit
- P2C53Cylinder 1 Fuel Injector B Offset Learning At Max Limit
- P02D0Cylinder 3 Fuel Injector A Offset Learning At Min Limit
- P02D2Cylinder 4 Fuel Injector A Offset Learning At Min Limit
- P02D4Cylinder 5 Fuel Injector A Offset Learning At Min Limit
- P02D6Cylinder 6 Fuel Injector A Offset Learning At Min Limit
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.