P0355 Fault Code

Ignition Coil E Primary/Secondary Circuit Malfunction

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0355 fault code indicates a malfunction in the ignition coil E primary/secondary circuit. This issue can lead to poor engine performance including misfires and reduced fuel efficiency. It's crucial for the ignition system to function correctly as it ignites the air-fuel mixture in the combustion chamber, enabling the engine to run smoothly.

What are the symptoms of the P0355 code?

Drivers may notice various symptoms associated with a P0355 fault code, such as:

• Engine misfires
• Rough idling or stalling
• Decreased acceleration and power
• Increased fuel consumption
• Check Engine Light illuminated on the dashboard.

What causes the P0355 code?

Several factors can contribute to the P0355 fault code, including:

• A defective ignition coil E
• Faulty wiring or connectors in the ignition system
• A malfunctioning Engine Control Module (ECM)
• Issues with the power supply to the ignition system
• Short circuits or open circuits within the ignition coil circuit.

How to fix P0355?

To resolve a P0355 fault code, consider the following steps:

• Inspect the ignition coil E for any visible damage and replace it if needed.
• Check the wiring and connectors for frays, corrosion, or loose connections and repair as necessary.
• Use a multimeter to test the resistance of the ignition coil.
• Verify the power supply and grounds to the ignition coil circuit.
• If all else fails, consider reprogramming or replacing the Engine Control Module (ECM).