Powertrain
generic / SAE
P28AD
Cylinder 8 Ion Current Sense Circuit Range/Performance
The ion current signal from cylinder 8 is outside the expected range for combustion conditions. Combustion quality cannot be assessed reliably.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number8 / AD
Possible causes
- Spark plug aged - electrode shape changed high
- Ion sense circuit gain drift medium
- Sensor element aged beyond calibration window low
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 100–700 €
- Estimated time: 0.5–3 h
- Component: spark plug cyl 8
- Component: ignition coil cyl 8
- Component: ion sense module
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012