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

P2322

Ignition Coil H Primary Control Circuit High

The primary control circuit of ignition coil H reads a voltage above the expected level — typically an open primary circuit or a short to battery voltage on the primary control wire. The ECU sees no normal current flow, coil H does not fire, and the cylinder misfires. Causes: an open or disconnected primary wire, an internal open in the coil, or a faulty ECU driver.

SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number3 / 22

Possible causes

  • Open circuit in primary winding or harness for coil H high
  • Connector pins corroded - high contact resistance low
  • Supply wire pinched against B+ source low

Inspection / repair

  • Difficulty: easy
  • DIY: possible
  • Estimated cost: 60–280 €
  • Estimated time: 0.4–1.2 h
  • Component: ignition coil h
  • Component: ignition coil wiring h
  • Component: ignition module
  • MIL / check engine light
  • emissions-relevant

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