Recommended action for code 402.

maxmk8

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Well my mark spit out code 402. "Excessive EGR flow detected". So i'm wondering what i should do, should i just pop in a new EGR sensor? or is there more to be done like cleaning the EGR tubes etc etc? Or is this linking to some other "bigger problem"?
 
RE: Recommended action for code 402.

Try checking your EGR tube coming off of the driver's side manifold. See if it is rusted through/broken/has any holes in it/etc. It's that accordian-tube like thing. Sorry I can't be more descriptive!
 
RE: Recommended action for code 402.

Thanks, well its a start i'll get to it first thing tomorrow morning.
 
RE: Recommended action for code 402.

Excessive EGR flow could mean a stuck EGR valve ...
Unluckily, anything EGR related is a PITA on 1st Gens.
You will have to take off the cowl assy to just see
the valve, let alone inspect or replace it.
 
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