P2C55

Code

Generic P — Powertrain

Cylinder 2 Fuel Injector B Offset Learning At Max Limit

Brand: Generic

Type: P — Powertrain

Views: UK: 15 EN: 32 RU: 31

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Faulty or partially clogged fuel injector (Cylinder 2)
Open, shorted or intermittent wiring/connectors to injector 2 (including poor ground or pin corrosion)
High injector resistance or internal short
Fuel pressure low or unstable (fuel pump, regulator, filter)
Mechanical injector sticking or leaking
Intake vacuum leak, compression problem or other mechanical issue on cylinder 2

Scan for all stored and pending codes; record freeze frame and PID values
Verify related misfire/injector codes (P0302, P0202, P0200 etc.)
Visual inspection of injector connector, wiring harness and pins for damage/corrosion
Measure injector resistance (cold) and compare to specification
Backprobe injector connector with a noid light while cranking/running to confirm pulse signal
Check injector supply voltage and ground with a multimeter

Read and record all codes, freeze frame and live PIDs; clear codes and re-run to confirm reproducibility.
Visually inspect wiring, connector and pins at Cylinder 2 injector for corrosion, damage or poor fit. Repair as necessary.
Measure injector resistance and compare to spec. Replace if out of range or intermittent when flexed.
Backprobe injector while cranking/running with a noid light or oscilloscope to confirm injector pulse and proper waveform. Check supply voltage and ground at connector.
Check fuel rail pressure at idle/cranking and during load; repair fuel delivery faults if pressure is out of spec.
Monitor short- and long-term fuel trims, O2 and MAF signals for indications of sensor-driven adaptation errors. Repair/replace sensors as indicated.
Perform a cylinder contribution or balance test. Swap injector 2 with another cylinder’s injector; if the code follows the injector, replace it.
If wiring and injector appear good, perform compression or leak-down test and smoke test for intake leaks on cylinder 2.
If all hardware checks good, consult OEM technical service bulletins and consider PCM reflash or reset adaptations. After repair, clear codes and perform required injector offset/learning procedure if applicable.
Post-repair verify: confirm no reoccurrence, fuel trims within range, and smooth operation under varied conditions.