P0624 Fuel Cap Lamp Control Circuit

• OBD2 Code: P0624
• Description: Fuel Cap Lamp Control Circuit
• Definition: This code indicates a malfunction in the circuit responsible for controlling the fuel cap lamp, which alerts the driver to issues with the fuel cap or its sensor.

P0624 – Fuel Cap Lamp Control Circuit

Typical severity: Moderate

Common Causes

P0624 – Fuel Cap Lamp Control Circuit

Common causes:

• Defective fuel cap lamp control module
• Faulty wiring or connectors in the fuel cap lamp circuit
• Corrosion or poor connection at the fuel cap lamp control module
• Short circuit in the fuel cap lamp control circuit

 

Common Misdiagnosis

OBD2 Code: P0624

Description: Fuel Cap Lamp Control Circuit

Common Misdiagnosis: Replacing the fuel cap or related components without checking the wiring or connectors for faults.

 

Common Diagnostic Steps

OBD2 Code: P0624

Description: Fuel Cap Lamp Control Circuit

• Check the fuel cap for proper installation and ensure it is tightly secured.
• Inspect the fuel cap for any visible damage or wear that might prevent a proper seal.
• Examine the wiring and connectors related to the fuel cap lamp control circuit for signs of damage, corrosion, or disconnection.
• Use a multimeter to test the voltage and continuity in the fuel cap lamp control circuit.
• Verify that there are no other codes present that could be causing an issue with the fuel cap lamp control circuit.
• If equipped, use an OBD2 scanner to perform a system test on the fuel cap lamp control circuit.
• If necessary, replace any faulty components such as wiring, connectors, or sensors associated with this circuit.