P0612 Fault Code

Fuel Injector Control Module Relay Control Circuit

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

The P0612 fault code indicates an issue with the Fuel Injector Control Module Relay Control Circuit. This code typically points to a problem involving the relay that controls the fuel injectors in the engine management system. When this relay fails or has issues within its circuit, the fuel injectors may not operate properly, leading to engine performance problems.

Key points to consider:

• May result in poor fuel economy.
• Often linked to hard starting or stalling of the engine.
• Could cause the engine to misfire due to incorrect fuel delivery.

What are the symptoms of the P0612 code?

Common symptoms associated with the P0612 code include:

• Engine cranking without starting.
• Stalling or hesitation during acceleration.
• Reduced engine power.
• Illuminated Check Engine Light (CEL).
• Poor fuel efficiency.

What causes the P0612 code?

Several factors can lead to the P0612 code, including:

• A faulty fuel injector control relay.
• Damaged wiring or connectors in the relay circuit.
• Issues within the Engine Control Module (ECM) affecting relay operation.
• Short circuits or ground faults in the circuit.

How to fix P0612?

To resolve the P0612 fault code, it's essential to:

• Inspect the fuel injector control relay and replace it if necessary.
• Check the wiring and connectors for damage, corrosion, or loose connections.
• Test the Engine Control Module (ECM) to ensure it's functioning correctly and not causing the issue.
• Clear the codes after repairs and test drive the vehicle to confirm the issue has been resolved.