Powertrain
generic / SAE
P28BC
Cylinder 12 Ion Current Sense Circuit
The ECM cannot read a valid ion current signal from cylinder 12. Ion current sensing relies on the spark plug acting as an electrode after combustion.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number8 / BC
Possible causes
- Ion sense module failed high
- Wiring or connector fault medium
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 100–700 €
- Estimated time: 0.5–3 h
- Component: spark plug cyl 12
- Component: ignition coil cyl 12
- Component: ion sense module
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012