The P1262 code on your 2023 Ford F-350 indicates a malfunction in the fuel injector circuit for cylinder 2. This Ford-specific code affects your F-350's 6.2L V8, 7.3L Godzilla V8, or 6.7L Power Stroke diesel engine's fuel delivery system, identifying an electrical issue with the second cylinder's injector control.
Understanding P1262 on F-350
Similar to P1261, code P1262 indicates the PCM has detected a fault in a specific cylinder's injector circuit - in this case, cylinder 2. The fault could be excessive current draw indicating a short, insufficient current indicating an open circuit, or feedback indicating improper injector operation.
Common Symptoms
- Check engine light illuminated
- Cylinder 2 misfire
- Rough idle
- Reduced engine power
- Engine vibration at idle
- Hard starting
- Black smoke on diesel models (if injector stuck open)
- Accompanying P0302 misfire code
Primary Causes
- Failed fuel injector for cylinder 2
- Wiring damage between PCM and injector
- Corroded or loose injector connector
- Short circuit in injector harness
- Open circuit in injector wiring
- PCM injector driver failure
- Oil or coolant contamination in connector
Diagnostic Procedure for 2023 F-350
Measure cylinder 2 injector resistance - should match specifications and other cylinders. For diesel engines, special test equipment may be needed to test piezo injectors. Inspect injector connector and wiring for damage. Perform injector swap test between cylinder 2 and another cylinder. Check for wiring shorts using an ohmmeter. Monitor injector control circuit with oscilloscope if available for proper pulse waveform.
Repair Solutions
Replace the fuel injector if testing confirms internal failure. Repair or replace damaged wiring harness sections. Clean and treat corroded connectors with electrical contact cleaner and dielectric grease. For Power Stroke diesel injectors, ensure proper high-pressure fuel system bleeding after replacement. Verify injector calibration codes are entered into PCM if required (diesel). Clear codes and verify proper operation.