Ignition Coil Secondary Circuit Malfunction
The P2335 code indicates a problem in the secondary circuit of the ignition coil, which is responsible for generating the high voltage needed to create a spark at the spark plug. This can be caused by a faulty ignition coil, damaged spark plug wires, a worn spark plug, or a shorted or open circuit in the secondary wiring. The issue often leads to misfires, reduced engine performance, and increased emissions.
1. Most Common Causes
- Faulty ignition coil
- Damaged spark plug wires or boots
- Worn or fouled spark plugs
- Short or open in secondary circuit wiring
2. Symptoms You Will Notice
- Engine misfire
- Check Engine Light on
- Rough idle
- Reduced power and acceleration
3. Step-by-Step Diagnosis
Step 1: Scan for codes and note freeze frame data.
Step 2: Visually inspect ignition coil, wires, and spark plugs for damage.
Step 3: Test ignition coil primary and secondary resistance with a multimeter.
Step 4: Swap coil with another cylinder to see if misfire moves.
Step 5: Check spark plug condition and gap; replace if necessary.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as it can cause catalytic converter damage due to unburned fuel.
How much does it cost to fix?▼
Typically $50 to $150 for parts and labor, depending on the specific component needing replacement.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.