Powertrain, generic (extended)

P2B15 Cylinder 3 Injection Pulse Offset Exceeded Learning Limit

Check engine lightOn

EmissionsRelevant

Drive cycleRequired

Limp modeNo

P2B15 reports that the zero-fuel correction learned for injector 3 has reached Ford's limit. For its 3.0 L six-cylinder diesel Ford adds conditions so the test injection takes place in a defined overrun: engine speed between 890 and 2,400 rpm, a gear from fourth to tenth held without shifting, the torque converter locked and the fuel balance wheel learn already finished. For the 6.7 L V8 engine, TSB 23-2076 from Ford (2020–2022 F-Super Duty) blames incorrect learned values after fuel system repairs and prescribes new PCM and TCM software plus the service function that resets the minimum fuel mass adaption for every cylinder, about 0.7 h of labour. A cylinder 3 balance fault (P0269) or injector performance fault (P02F0) should be ruled out first.

Likely causes

Learned values unsuitable after fuel system repairs (Ford TSB 23-2076, software and adaption reset)

Injector 3 drifted mechanically (wear, coking, internal leakage)

Outdated PCM calibration

Symptoms

Malfunction indicator lamp on
Possibly knocking or rough running at idle

Repair estimate

DifficultyMediumWorkshop job

Parts and labour€80–2,500

Time0.5–6 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

fuel injector cylinder 3engine control module

References: fordservicecontent.com, static.nhtsa.gov.