how to fix the EPC light on Volkswagen Golf MK7 (2015-2019)

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the vehicle's battery to prevent electrical shorts during the process.
• Allow the engine to cool down if it has been running.

2. Clean or Replace Throttle Body

• Tools Required: Socket set, throttle body cleaner, soft brush.
• Remove the intake duct connected to the throttle body by unscrewing the clamps.
• Detach the throttle body from the intake manifold by removing the bolts.
• Inspect the throttle plate for carbon buildup; clean it with throttle body cleaner and a soft brush.
• If the throttle body is damaged, replace it with a new one.

3. Inspect and Repair Wiring

• Tools Required: Multimeter, electrical tape.
• Visually inspect the wiring harness connected to the throttle body and accelerator pedal position sensor for signs of wear or damage.
• Use a multimeter to test for continuity in the wiring.
• Repair or replace any damaged wires or connectors.

4. Check and Replace Accelerator Pedal Position Sensor (if necessary)

• Tools Required: Socket set, OBD-II scanner.
• Disconnect the accelerator pedal position sensor connector.
• Use the multimeter to verify the sensor's resistance and output signals according to specifications.
• Replace the sensor if it does not meet specifications.

5. Verify Brake Light Switch Operation

• Tools Required: Multimeter.
• Check the brake light switch operation by testing for continuity while pressing and releasing the brake pedal.
• Replace the switch if faulty.