P2327: Ignition Coil J Primary Control Circuit Low
Do not keep driving
Stop if the engine light is flashing, even if the car feels normal. Ask for the coil to be swapped with a neighbour before parts are bought — if the fault follows it, the coil is proven faulty.
What this code means
Coil J's primary control circuit reads below its valid range. The primary and secondary distinction is at P2300, the shared-supply caution at P2312, and the note at P2324 about a misfire being easy to miss on an engine of this size.
Likely causes
Start here
- Faulty ignition coil · easy
- Wiring shorted to ground · moderate
- Damaged wiring harness · moderate
Less common
- Faulty ignition coil driver in the module · specialist
Symptoms
Components involved
Information, not instruction
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Community experience
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