Powertrain
generic / SAE
P030C
Ignition A Control Signal Circuit High
Ignition A Control Signal Circuit High: the signal voltage is above the expected range. This line drives an ignition coil group; a fault causes misfire on those cylinders.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number3 / 0C
Possible causes
- Short to B+ high
- Connector pins corroded - high contact resistance low
- Supply wire pinched against B+ source low
Inspection / repair
- Difficulty: medium
- DIY: possible
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References
sae:J2012