P2317Ignition Coil F Secondary Circuit
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- 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.
- What you may notice
- Check engine light on
- Misfire on cylinder 6
- Uneven running, especially under load
- Likely causes
- LikelySpark plug of cylinder 6 worn or wrongly gapped
- PossibleCoil F boot cracked or contaminated
- PossibleCoil F secondary winding failing
- RarePCM ion-current evaluation defective (FCA)
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €30 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.