P21DFCylinder 2 Injector B Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P21DF is set when the cylinder 2 B injector circuit shows a short toward supply. Mitsubishi's 2022 Eclipse Cross applies it to the direct high-pressure injector and stores it after a 2 s short with the ignition on and the driver supply above 10 V; troubleshooting first inspects the negative DI wire of cylinder 2 up to the engine module and names the injector, the harness and the ECM as possible causes. The fail-safe is graded: with one cylinder affected, both injectors of that cylinder stop; with several, the engine falls back to port injection and torque is limited. GM's 2019 LT5 V8 judges the same title on its supplemental injector by less than 0.5 Ohm toward power on the low side, Type A. The port injector high code of this Mitsubishi cylinder would be P0265; P21DE is the low fault.
- What you may notice
- Check engine light on
- Cylinder 2 switched off or misfiring
- Less pulling power with multiple faults
- Likely causes
- LikelyNegative injector line of cylinder 2 shorted to supply
- PossibleInjector coil shorted
- RareECM or injection module driver defective
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €100 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.