Powertrain, generic (extended)

P2324 Ignition Coil I Primary Control Circuit Low

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

Coil I is the ninth coil, so P2324 only appears on ten- or twelve-cylinder petrol engines. The documented user is Ford: its OBD system summaries (2012 and 2020–2023) group P2324 with the other codes for a coil driver shorted to ground, monitored continuously from 200 rpm with the battery between 11 and 16 V, and Ford's 2014 code interpretation list marks it as a MIL code. The candidate engine in Ford's range is the 6.8-litre Modular V10 of the E-Series and heavy trucks, for which Ford also specifies a 40-1 crank wheel. After a driver fault the PCM shuts the injector of that cylinder for 30 s and retries. GM's tables end at coil H, so no GM engine uses this code. Opens on coil I are P0359, misfire on cylinder 9 is P0309.

Likely causes

Coil I (cylinder 9) shorted internally
Coil I control wire grounded on the engine or exhaust side
Moisture or corroded pins at the coil I plug
PCM coil driver for cylinder 9 failed

Symptoms

  • Check engine light on
  • Cylinder 9 cuts out, rough running
  • Reduced towing or climbing power

Repair estimate

DifficultyMediumDIY possible
Parts and labour€40–450
Time0.3–2.5 h

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

Parts involved

ignition coilcoil driverignition wiring

Related codes

P2325P2326P0359P2321P2327P0309

References: newtonnet.co.uk, fordservicecontent.com, performanceparts.ford.com, en.wikipedia.org.