P2314 — Ignition Coil "E" Secondary Circuit

OBD2 code P2314 flags a problem with the ignition system (ignition coil "E" secondary circuit). Short, gentle driving to a shop is usually possible. Common culprits: damaged coil wiring or connector, failed ignition coil or coil pack, faulty ignition control circuit in the ECM.

powertrain (engine/transmission)

Is it safe to drive?

Drive with caution Drive with caution and avoid load. Ignition faults cause misfires that quickly overheat and destroy the catalytic converter; if the Check Engine Light flashes, stop and fix it first.

How to diagnose with an OBD scanner

Read the code and freeze frame Connect an OBD2 scanner, confirm P2314 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
Check for companion codes and TSBs Related codes often reveal the real root cause. Also check manufacturer technical service bulletins (TSB) for your make and model — many P0xxx issues have factory fixes or software updates. Search by VIN on the manufacturer site or nhtsa.gov.
Inspect wiring and connectors Visually inspect the wiring harness and connectors related to the ignition system for damage, corrosion, chafing or poor contact.
Subsystem check Swap the coil to another cylinder and see if the fault code follows it.
Subsystem check Inspect spark plugs for wear, oil or carbon tracks and check plug gaps.
Verify the repair Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P2314 does not return.

Approximate repair cost

Repair cost depends on which component actually failed. Typical scenarios for P2314 (parts and labor, USD, independent shop rates): Repair coil wiring or connector: $80–$250; Replace spark plugs: $90–$250; Replace an ignition coil: $150–$380. Overall, fixing P2314 usually costs between $80 and $380. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.

Common questions

Is it safe to drive with P2314?

Drive with caution and avoid load. Ignition faults cause misfires that quickly overheat and destroy the catalytic converter; if the Check Engine Light flashes, stop and fix it first.

What are the symptoms of P2314?

Drivers most often notice: increased fuel consumption, loss of power and jerking, Check Engine Light on, misfires under load or at idle.

Will P2314 clear itself?

Sometimes P2314 clears after a few drive cycles if the fault was intermittent — for example a loose connector or a tank of bad fuel. The underlying cause usually remains, so the code tends to return. Clear it once; if it comes back, diagnose rather than erase it repeatedly.

What does OBD2 code P2314 mean?

How do I diagnose P2314 myself?

Start with a scan: confirm P2314, save the freeze frame and note any companion codes. Then inspect the wiring and connectors related to the ignition system, and verify the suspect component against live data before buying parts.

What does P2314 mean?

P2314 is logged by the onboard diagnostics when the ignition system does not behave as expected. The official definition is “Ignition Coil "E" Secondary Circuit”. This is a powertrain (engine/transmission) category code.

To set P2314, the control module compares live readings of the ignition system against calibrated limits, usually over several drive cycles. Alongside the code it stores a freeze frame — a snapshot of rpm, load, coolant temperature and vehicle speed at the moment of failure. Reading that snapshot first saves diagnostic time.

What causes P2314?

moisture or oil in the spark plug wells
failed ignition coil or coil pack
worn spark plugs or wrong plug gap
damaged coil wiring or connector
faulty ignition control circuit in the ECM

Common symptoms of P2314

increased fuel consumption
loss of power and jerking
Check Engine Light on
misfires under load or at idle
hard starting, especially in damp weather

How to diagnose P2314

Connect an OBD2 scanner, confirm P2314 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
Related codes often reveal the real root cause. Also check manufacturer technical service bulletins (TSB) for your make and model — many P0xxx issues have factory fixes or software updates. Search by VIN on the manufacturer site or nhtsa.gov.
Visually inspect the wiring harness and connectors related to the ignition system for damage, corrosion, chafing or poor contact.
Swap the coil to another cylinder and see if the fault code follows it.
Inspect spark plugs for wear, oil or carbon tracks and check plug gaps.
Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P2314 does not return.

How to fix P2314

Start with the cheapest and most common causes before replacing expensive parts:

Repair coil wiring or connector — $80–$250
Replace spark plugs — $90–$250
Replace an ignition coil — $150–$380

How much does it cost to fix P2314?

Repair cost depends on which component actually failed. Typical scenarios for P2314 (parts and labor, USD, independent shop rates):

Repair coil wiring or connector: $80–$250
Replace spark plugs: $90–$250
Replace an ignition coil: $150–$380

Overall, fixing P2314 usually costs between $80 and $380. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.

Can you drive with P2314?