CEL 558 Code

[JamesM007]

Have 94 Explorer. DTFE (new hoses), EGR, and EVR Selenoid all replaced. Code now emitted is 558 = EGR Vacum Regulator Circuit Failure.

My questions is: Does the circut failure code mean ellectrical circuit or does it mean the circuit of air recirculation from the manifold to the EGR system components? Could it be a dirty tube running from the ex. manifold to the DTFE or?

This problem is starting to piss me off because I have changed all 3 components of the system. Also spits out a 332 EGR flow isufficient code.

Any suggestions?

Thanks

James.

 

[Glacier991]

Check the wiring from the DPFE sensor and the vacuum solenoid. You may have a chafed or burned wire that's grounding out, or two wires shorted. 558 is electrical circuitry. HTH

Happy Exploring

Chris

 

[JamesM007]

Still can't figure this one out. Also, the CEL (for the 558 code) comes on and off intermitently. What perhaps does this mean?

Thanks.

James.