What is CID 104:
CID 104 refers to an issue with the exhaust gas recirculation (EGR) system. The ECM detects a malfunction in the EGR valve or control circuit, which can result in increased emissions, poor fuel economy, and engine stalling.
Why This Happens:
- Faulty or malfunctioning EGR valve.
- Clogged or contaminated exhaust system components.
- Shorted or damaged wiring in the EGR circuit.
- Loose or corroded connectors.
- ECM failure to properly process EGR data.
How to Fix It:
- Inspect the EGR valve for carbon buildup or malfunction.
- Test the EGR valve for proper operation.
- Clean or replace clogged exhaust components.
- Check wiring and connectors for damage or corrosion.
- Replace the faulty EGR valve if necessary.
How to Avoid It Before It Happens:
- Regularly clean or replace the EGR valve to prevent carbon buildup.
- Inspect exhaust components and EGR systems for contamination.
- Keep connectors clean and free from corrosion.
- Perform diagnostic checks to monitor EGR valve performance.
- Clue’s equipment maintenance services track exhaust systems and help prevent issues before they affect engine operation.
