P2316
Ignition Coil F Primary Control Circuit High
Ignition system
Generic OBD-II
Medium
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.
Medium
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.
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?+
For short distances, yes, but a dead coil causes a misfire that can overheat and damage the catalytic converter. Repair it promptly, especially if the light is flashing.
Can I just clear P2316?+
It returns quickly unless the coil or its control circuit is repaired.
Related codes
Often seen with P2316
Read & clear P2316 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX