Ignition Coil F Primary Control Circuit High
What it means
P2316 means the engine computer detected high voltage in the primary control circuit of ignition coil "F." A fault here can stop that coil from firing its cylinder, causing a misfire, rough running, and reduced power. The usual culprits are the coil or its wiring and connector rather than internal engine problems.
Can I keep driving? Drivable but not ideal — the affected coil may not fire, causing a misfire that can, over time, damage the catalytic converter.
Real-world scan data
Appears alongside · share of P2316 scans
Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.
Common symptoms
What you'll notice
- Check-engine light on (may flash during an active misfire)
- Rough idle or a stumble/miss on that cylinder
- Hesitation and reduced power
- Slightly higher fuel consumption
Common causes
Most likely first
- Corroded or loose connector at ignition coil FLikely
- Control wire shorted to voltage or an open in the primary circuitCommon
- Failed ignition coil FCommon
- Poor ground or supply to the coilLess often
- Failed PCM/ECM coil driver (less common)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and identify which cylinder coil F serves for your engine.
- Inspect the coil connector and primary wiring for corrosion, shorts to voltage, and opens.
- Swap coil F with a known-good coil to see if the fault follows the coil.
- Check the coil's power and ground and the driver circuit back to the PCM.
- Replace the coil if it fails testing, then clear and re-test.
FAQ
Quick answers
Is it safe to drive with P2316?+
Can I just clear P2316?+
Related codes
Read & clear P2316 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.