OBD-II code · Powertrain (generic, extended)
P268B High Pressure Fuel Pump Calibration Not Learned/Programmed
After high-pressure pump replacement the engine controller did not receive the pump-specific calibration data. Rail pressure regulation runs from default values.
Is it safe to drive with P268B?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyPump calibration codes not entered after replacement
- PossibleProgramming session aborted before completion
Symptoms
- Check engine light on
- Hard start, no start, or stalling under load
- Power loss especially at high load or rpm
- Possible long cranking time
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–1.5 h
- Emissions test
- Usually unaffected
- Parts involved
- High Pressure Pump, Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.