What is CID 174:
CID 174 refers to a problem with the vehicle's fuel system, particularly the fuel pump relay. The ECM detects that the relay is malfunctioning, which leads to improper fuel delivery and potential engine stalling.
Why This Happens:
- Faulty fuel pump relay.
- Shorted or damaged wiring in the relay control circuit.
- Loose or corroded connectors.
- Power supply issues affecting the relay.
- ECM failure to properly interpret the relay’s data.
How to Fix It:
- Inspect the fuel pump relay and wiring for damage.
- Test the relay to ensure it operates correctly.
- Check connectors for tightness and cleanliness.
- Replace the faulty fuel pump relay if necessary.
- Inspect the fuel system for any pressure inconsistencies or pump-related issues.
How to Avoid It Before It Happens:
- Regularly inspect the fuel pump relay and wiring.
- Perform routine checks of the fuel system and relay circuit.
- Keep connectors clean and free from corrosion.
- Perform diagnostic checks to monitor fuel pump relay health.
- Clue’s fuel management services track fuel pump systems and prevent issues before they affect engine operation.
