Ignition L Control Signal Circuit/Open

Common symptoms

What you'll notice

• Check the ignition control module for any loose connections or damaged wires.
• Inspect the ignition coil and ignition control module for any signs of malfunction or failure.
• Test the ignition control module using a diagnostic tool to identify any specific issues or errors.
• Replace the ignition control module if it is determined to be defective or faulty.
• Verify and repair any issues with the ignition wiring circuit, if necessary.

Common causes

Most likely first

1. Faulty ignition coil
2. Malfunctioning ignition control module
3. Defective ignition switch
4. Loose or damaged wiring in the ignition system

How to diagnose & fix

Work through it in order

1. Engine misfires or stumbles
2. Loss of power or acceleration
3. Difficulty starting the engine
4. Poor fuel efficiency
5. Illuminated check engine light

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