Powertrain, generic (extended)

P2C30 Ignition Coil Primary Circuit Fuse A

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

On engines whose ignition coils are fed through more than one fuse, the module checks each fuse so that it notices when a whole group of coils loses power. P2C30 points to fuse A. A GM patent explains the reasoning: coils and injectors sit on separate circuits, so after a fuse blows fuel would still be injected into cylinders without spark; the module therefore watches the current through the fuse over a sampling window and cuts the matching injectors to spare the exhaust system. Stellantis uses P2C30 on the 3.0L Hurricane twin-turbo I6 with a separate ignition system control module (ISCM): bulletins 08-205-24 (2025 Ram 1500) and 08-221-24 (2023 Wagoneer) fix it by ISCM software. Expect MIL, misfire and hesitation. Which cylinders fuse A serves is not published.

Likely causes

Ignition system control module software (Stellantis 3.0L Hurricane)
Fuse A blown by a shorted ignition coil or supply wire
Loose or corroded fuse terminal

Symptoms

  • Check engine light
  • Misfire on several cylinders, hesitation
  • Reduced power while cylinders are shut off

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€20–400
Time0.2–1.5 h

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

Parts involved

ignition coil fuse aignition coilswiring harness

Related codes

P2C31P0300P0351P0350P0420

References: static.nhtsa.gov, static.nhtsa.gov, static.nhtsa.gov, patents.google.com.