OBD-II code · Powertrain (generic, extended)
P268A Fuel Injector Calibration Not Learned/Programmed
After injector replacement the engine controller did not receive the per-injector flow calibration codes (IMA, ISA, IMV). Cylinder balance and emissions are out of tolerance.
Is it safe to drive with P268A?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyInjector calibration codes not entered after replacement
- PossibleWrong codes entered for the wrong cylinder positions
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
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–1.5 h
- Emissions test
- Likely to fail
- Parts involved
- Fuel Injectors, Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.