Ignition F Control Signal Circuit Low

Common symptoms

What you'll notice

• Check the wiring and connectors related to the ignition system for any loose or damaged connections.
• Inspect the ignition control module for any faults or malfunctions and replace if necessary.
• Clean or replace the ignition coil to ensure proper functioning.
• Verify and adjust the ignition timing if it is found to be incorrect.
• Inspect the engine's computer system (ECM) for any error codes or faults related to the ignition system and address them accordingly.

Common causes

Most likely first

1. Faulty ignition coil
2. Defective ignition control module
3. Wiring issues in the ignition system
4. Faulty ignition switch
5. ECU (engine control unit) malfunction

How to diagnose & fix

Work through it in order

1. Engine misfires or runs rough
2. Decreased fuel efficiency
3. Difficulty starting the engine
4. Lack of power or acceleration
5. The check engine light illuminating