Code result
P22E8
Cylinder 4 Alternative Fuel Injector Control Circuit Range/Performance
High severity
What it means
Cylinder 4 alternative-fuel injector is electrically OK but its response (current ramp, dwell, peak voltage) is off-spec — typically winding ageing.
Is it safe to drive?
No — stop driving
This code points to a problem that can cause damage or affect safety. Avoid driving and have the vehicle diagnosed promptly.
Most likely causes
Winding ageing
highOne of the most commonly reported causes for this code — check this first.
Sensor element aged beyond calibration window
lowLess common, but worth ruling out after the more likely causes.
Sensor mounting loose - signal damping
lowLess common, but worth ruling out after the more likely causes.
Related help
Get the full diagnosis
Add your vehicle and see step-by-step repair help, recalls, and TSBs in Wrenchify.
Diagnose P22E8 freeNo credit card required