Powertrain, generic (extended)

P2317 Ignition Coil F Secondary Circuit

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

P2317 concerns the high-voltage side of coil F, which serves cylinder 6 on engines with six or more cylinders. With coil-on-plug designs there is no separate lead any more – Ford notes that individual coils did away with plug wires – so a secondary fault lies in the coil, its boot or the plug. FCA's 3.6 Pentastar V6 is the documented user: P2317, coil 6 secondary circuit with insufficient ionization, is the last of the six ion-sense codes in bulletin 18-069-16 for 2015–2016 Caravan and Town & Country. The principle comes from systems such as Saab's Direct Ignition, which measure ion current across the plug to recognise misfire and knock. Ford, GM and VW record coil F only on the primary side; a weak spark there appears as P0306.

Likely causes

Spark plug of cylinder 6 worn or wrongly gapped
Coil F boot cracked or contaminated
Coil F secondary winding failing
PCM ion-current evaluation defective (FCA)

Symptoms

  • Check engine light on
  • Misfire on cylinder 6
  • Uneven running, especially under load

Repair estimate

DifficultyMediumDIY possible
Parts and labour€30–900
Time0.3–3 h

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

Parts involved

ignition coilspark plug

Related codes

P2315P2316P2314P0306P0300

References: static.nhtsa.gov, newtonnet.co.uk, en.wikipedia.org, law.cornell.edu.