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

P2310

Ignition Coil D Primary Control Circuit High

The ECU detects an excessive voltage on the primary control of ignition coil D, normally caused by a short to battery or an open primary winding.

SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number3 / 10

Possible causes

  • Primary shorted to battery high
  • Open primary winding medium
  • Connector pins corroded - high contact resistance low

Inspection / repair

  • Difficulty: easy
  • DIY: possible
  • Estimated cost: 50–250 €
  • Estimated time: 0.2–1 h
  • Component: ignition coil
  • Component: coil driver
  • Component: ignition wiring
  • MIL / check engine light
  • emissions-relevant
  • drive cycle required

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