P0356 Fault Code

Ignition Coil F Primary/Secondary Circuit Malfunction

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

The P0356 fault code indicates a malfunction in the ignition coil's primary or secondary circuit. This can lead to poor engine performance and may trigger the check engine light. The ignition coil is responsible for generating the high voltage needed to ignite the air/fuel mixture in the combustion chamber.

What are the symptoms of the P0356 code?

• Engine misfires or runs rough
• Decreased fuel efficiency
• Difficulty starting the engine
• Check engine light illuminated
• Rough idling or stalling.

What causes the P0356 code?

• Damaged ignition coil
• Poor electrical connections in the wiring harness
• Faulty powertrain control module (PCM)
• High resistance in the ignition circuit
• Short or open circuit conditions.

How to fix P0356?

• Inspect and replace the ignition coil if found faulty
• Check for and repair any damaged wiring or connectors
• Test the PCM to ensure it's functioning correctly
• Clear any fault codes and verify if the issue persists.
• Ensure proper installation and alignment during coil replacement.