P2314

Ignition Coil E Secondary Circuit

Q: Is it safe to drive with P2314?

Only briefly. A secondary-circuit fault means one cylinder may not be firing, and unburned fuel can overheat and damage the catalytic converter. Fix it soon, especially if the light is flashing.

Q: Can I just clear P2314?

It will return quickly if the coil, plug, or boot is faulty. Clearing it does not fix the misfire.

Ignition Generic OBD-II Medium

What it means

P2314 means the ECM has detected a fault in the secondary (high-voltage) circuit of ignition coil E — the side that delivers spark to the plug. This usually causes a misfire on that cylinder, with rough running and reduced power. Common causes are a failed coil, a worn spark plug or boot, or arcing in the secondary path.

Medium

Can I keep driving? Drivable but likely misfiring on one cylinder — avoid extended or hard driving, as a sustained misfire can damage the catalytic converter.

Real-world scan data

Seen in

scans in the past year

Found in

<0.1%

of scans

<0.1%

of scans that found faults

Appears alongside · share of P2314 scans

P2316in 82.0% of 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 and engine shake
Hesitation or stumble on acceleration
Reduced power and rougher running under load

Common causes

Most likely first

Failed ignition coil ELikely
Worn or cracked spark plug, boot, or plug wire on that cylinderCommon
Carbon tracking or arcing in the coil's secondary pathCommon
Corroded or loose coil connectorLess often
Excessive spark-plug gap or a fouled plugLess often

How to diagnose & fix

Work through it in order

Read freeze-frame data and note any cylinder-specific misfire codes.
Inspect the spark plug, boot, and (if fitted) plug wire on coil E's cylinder for wear, cracks, or carbon tracks.
Swap coil E with a neighbouring coil and see whether the fault follows the coil.
Check the spark plug gap and condition; replace if fouled or worn.
Replace the coil if it fails testing; otherwise repair the secondary components. Clear and re-test.

FAQ

Quick answers

Is it safe to drive with P2314?+

Only briefly. A secondary-circuit fault means one cylinder may not be firing, and unburned fuel can overheat and damage the catalytic converter. Fix it soon, especially if the light is flashing.

Can I just clear P2314?+

It will return quickly if the coil, plug, or boot is faulty. Clearing it does not fix the misfire.

Read & clear P2314 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX