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.
Medium severity. Can I keep driving?If the car is running normally, drive in moderation to a repair shop. If it loses power or another warning appears, do not continue.
Cylinder 3 is numbered according to the manufacturer: check your engine's manual before working on it.
Symptoms
- Malfunction indicator lamp on
- Possibly knocking or rough running at idle
Most 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- Outdated PCM calibration
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- Repair difficulty: medium
- It affects emissions.
What each character of P2B15 means
- P: Powertrain: engine and transmission
- 2: Generic code: same on every make
- B: Subsystem depends on the code range
- 15: Specific fault in that system
Frequently asked questions
Can I keep driving with code P2B15?
If the car is running normally, drive in moderation to a repair shop. If it loses power or another warning appears, do not continue.
What causes code P2B15?
The most common causes are: 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(Ford TSB 23-2076, software and adaption reset); injector 3 drifted mechanically (wear, coking, internal leakage); outdated PCM calibration.
Related codes
- P2B14Cylinder 3 Injection Pulse Offset Not Learned
- P2B13Cylinder 2 Injection Pulse Offset Exceeded Learning Limit
- P2B17Cylinder 4 Injection Pulse Offset Exceeded Learning Limit
- P0269Cylinder 3 Contribution/Balance
- P02F0Cylinder 3 Injector Circuit Range/Performance
- P02D0Cylinder 3 Fuel Injector A Offset Learning At Min Limit
- P02D1Cylinder 3 Fuel Injector A Offset Learning At Max Limit
Sources
Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.