Ignition Coil Primary Control Circuit High Voltage
The P2313 code indicates that the powertrain control module (PCM) has detected a voltage higher than expected in the primary control circuit of a specific ignition coil. This circuit controls the coil's charging and firing. A high voltage condition can result from a faulty ignition coil, wiring issues, or a malfunctioning PCM. This code typically applies to vehicles with individual ignition coils for each cylinder.
01. Most Common Causes
- Faulty ignition coil
- Short to voltage in the ignition coil control circuit
- Damaged wiring or connector
- Faulty PCM
02. Symptoms You Will Notice
- Engine misfire
- Check Engine Light on
- Rough idle
- Decreased fuel economy
03. Step-by-Step Diagnosis
Step 1: Scan for codes and note the cylinder associated with P2313.
Step 2: Visually inspect the ignition coil wiring and connector for damage or corrosion.
Step 3: Swap the suspect ignition coil with another cylinder and see if the code follows.
Step 4: Test the ignition coil primary resistance with a multimeter (specs vary by vehicle).
Step 5: Check for shorts to voltage in the control circuit using a multimeter.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive with this code as it can cause engine misfire, reduced performance, and potential damage to the catalytic converter.
How much does it cost to fix?▼
The cost typically ranges from $100 to $300, including parts and labor, depending on the vehicle and whether the ignition coil or wiring needs replacement.