OBD-II reference

All 9.533 generic OBD-II codes, explained in detail.

Causes, inspection steps and sources — a comprehensive DIY archive. Created and maintained with love for the detail. Good luck and have fun!

Powertrain generic / SAE

P2C30

Ignition Coil Primary Circuit Fuse A

The ECM detects an open or blown fuse on the ignition coil primary supply circuit A. Affected coils receive no operating voltage.

SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberC / 30

Possible causes

  • Primary supply fuse blown by short circuit high
  • Shorted ignition coil drawing excess current medium

Inspection / repair

  • Difficulty: easy
  • DIY: possible
  • Estimated cost: 20–300 €
  • Estimated time: 0.2–1.5 h
  • Component: ignition coil fuse a
  • Component: ignition coils
  • Component: wiring harness
  • MIL / check engine light
  • emissions-relevant
  • limp mode possible

Sources

References

How to read OBD-II codes

The first letter names the vehicle system, the second digit distinguishes generic from manufacturer-specific, the remaining digits group fault area and number.

PPowertrain: engine, transmission, emissions
BBody: chassis trim, comfort, interior
CChassis: suspension, brakes, steering
UNetwork: CAN, control modules, communication