white stuff is getting into my EGR and my engine Light on it have a code#PO401& code#PO420 how can i fit this problem?
May 9, 2012 at 7:05 PM
white stuff is getting into my EGR how can i fit it?
JOE1953
- MEMBER
- 809 POSTS
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It is likely that your EGR valve is sticking open, then sticking closed. It is not common to have these codes together. You might be able to take the valve off and lubricate it to see if this makes the code go away.
May 9, 2012 at 7:07 PM
the engine run good.will a leakage intakegasket make this problem?
May 9, 2012 at 7:25 PM
Probably not. If that were the case you would likely only have one of these codes. It is possible I guess though.
May 9, 2012 at 7:32 PM
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