What is CID 994 & How to Solve It?

What is CID 994:

cid 994 indicates a problem with the fuel shutoff valve circuit. the valve may not open or close as commanded, causing stalling, hard starts, or fuel starvation.

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Why This Happens:

• faulty fuel shutoff solenoid.
  
• shorted or broken wiring.
  
• stuck valve mechanism.
  
• corroded connectors.
  
• ecm signal failure.
  
  

How to Fix It:

1. inspect the fuel shutoff solenoid for proper operation.
   
2. check wiring for shorts or breaks.
   
3. clean connectors and ensure tight electrical contact.
   
4. replace the solenoid if non-responsive.
   
5. confirm proper fuel delivery post-repair.
   
   

How to Avoid It Before It Happens:

• inspect valves during fuel system maintenance.
  
• use clean, high-quality diesel or gasoline.
  
• check wiring integrity regularly.
  
• clue’s fuel management services help detect shutoff valve issues before they affect equipment uptime.