P0362 Fault Code

Ignition Coil L Primary/Secondary Circuit Malfunction

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

The P0362 fault code indicates an issue with the ignition coil's primary or secondary circuit. This can lead to insufficient voltage being delivered to the ignition coil, which is crucial for generating a spark to ignite the air-fuel mixture in the engine. A malfunction in this area can cause engine performance issues, leading to rough idling, reduced power, and increased emissions.

What are the symptoms of the P0362 code?

Symptoms associated with a P0362 code may include:

• Check Engine Light (CEL) illuminated on the dashboard
• Engine misfires leading to rough running
• Difficulty starting the engine or long cranking times
• Decreased fuel efficiency
• Engine stalling or hesitation during acceleration

What causes the P0362 code?

Common causes of a P0362 code include:

• Faulty ignition coil
• Damaged wiring or connectors in the ignition system
• A malfunctioning Engine Control Module (ECM)
• Short circuits or open circuits in the ignition coil circuit
• Issues with the powertrain control module (PCM)

How to fix P0362?

To resolve the P0362 code, follow these steps:

1. Inspect the ignition coil, wiring, and connectors for damage or corrosion.
2. Test the ignition coil for proper resistance and functionality; replace it if necessary.
3. Check for any short or open circuits in the wiring harness that connects to the ignition coil.
4. Clear the fault code from the ECU and perform a test drive to see if the code reappears.
5. If the issue persists, further diagnose the Engine Control Module (ECM) and related components.