What dose this mean?

scbird1

Registered User
Ok I posted this before but no one looked at it. What is - Fuel pump{FP} ciucuit open connection -electronic control assembly {ECA} to motor ground. Ok how about a guess cause Ive run out of guesses. Look at code 542
 
When I looked up 542 what I got was: O/C Feul pump secondary circut failure.

I'm gonna guess something with a loose wire somewhere, but I don't know.
 
What does this mean?

Sounds like it's time for a breakout box and a multimeter.
 

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But what to look for? No other codes, fuel pump cheks out fine on all tests. Maybe relay. It is a stored memory code so maybe this is intermitant. Car runs like crap but idles perfect.
 
Two possibilities here-

PCM (ECA) relay to ground bad

Secondary fuel pump circuit I have covered before-this would be the Canister Purge Valve-if that goes bad it can mess up the entire fuel system as everything links through it.

If you need schematics, let me know and I'll send them via email.
 
Thanks Tony, at least I have some where to look. I have wire diagrams for all years. Il let you know what I find out.
 
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