Ignition Coil "E" Primary Control Circuit High
Code P2313 indicates the ignition coil E primary control circuit is detecting a high voltage condition. The PCM has identified that the voltage in the ignition coil control circuit is higher than the expected range, which can prevent proper spark plug firing and fuel injection timing for that cylinder.
What You Might Notice
- Engine misfire or rough idle
- Diminished engine performance and power loss
- Reduced fuel efficiency
- Check Engine Light illuminated
- Possible fuel injector disabled on affected cylinder
Most Common Causes
- 1
Faulty ignition coil E
The ignition coil for cylinder E may have internal resistance issues or be failing, causing abnormal voltage readings in the primary control circuit.
- 2
Wiring or connector issues
Damaged, corroded, or loose wiring and connectors in the ignition coil circuit can cause high voltage readings and poor electrical contact.
- 3
PCM control module problem
A faulty powertrain control module may incorrectly detect or report high voltage conditions in the ignition coil circuit.
- 4
Battery or charging system fault
An overcharging condition from a faulty alternator or voltage regulator can cause elevated voltages throughout the electrical system including the ignition circuit.
How to Diagnose It
- 1
Check Faulty ignition coil E — The ignition coil for cylinder E may have internal resistance issues or be failing, causing abnormal voltage readings in the primary control circuit.
- 2
Check Wiring or connector issues — Damaged, corroded, or loose wiring and connectors in the ignition coil circuit can cause high voltage readings and poor electrical contact.
- 3
Check PCM control module problem — A faulty powertrain control module may incorrectly detect or report high voltage conditions in the ignition coil circuit.
- 4
Check Battery or charging system fault — An overcharging condition from a faulty alternator or voltage regulator can cause elevated voltages throughout the electrical system including the ignition circuit.
How to Fix It
- 1
Replace ignition coil E
Remove and replace the faulty ignition coil pack for cylinder E with an OEM or quality replacement part. This is the most common resolution for this code.
- 2
Inspect and repair wiring
Examine the primary control wiring and connectors leading to ignition coil E for damage, corrosion, or loose connections. Repair or replace damaged harnesses and clean corroded connectors.
- 3
Test charging system
Have the alternator and voltage regulator tested to ensure proper output voltage is not exceeding specification. Replace faulty charging components if needed.
- 4
Check PCM operation
If other repairs do not resolve the code, have the PCM tested or consider replacement if it is determined to be faulty after eliminating other causes.
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