P2330 Ignition Coil K Primary Control Circuit Low

P2330 belongs to coil K, the eleventh coil, which only twelve-cylinder petrol engines have – V12 units such as those built by BMW, Mercedes-Benz, Lamborghini or Ferrari, or the VW group's W12. No manufacturer documents this code publicly; the published coil lists stop earlier (Ford at J, GM at H). The meaning follows from the analogous lower codes: the module sees the coil K driver line held at ground potential, as GM describes for its cylinder 8 code P2321 (short to ground judged against controller voltage limits, 50 of 63 samples). Under CARB's comprehensive component rules such a circuit fault on an output must be detected. Wiring and connector of that one coil should be checked before the module is suspected; an open circuit would be P0361.

Likely causes

Symptoms

• Check engine light on
• Cylinder 11 not firing
• Slight roughness, often hard to feel on a V12

Repair estimate

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

Related codes

References: law.cornell.edu, gsi.ext.gm.com, en.wikipedia.org.