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Thread: P0400 Code!!!
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post #1 of Old 08-14-2019, 06:20 AM Thread Starter
Dan Kasht
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P0400 Code!!!

Hi all need help on a 2003 E320 sedan

I have had a p0400 code i cannot get rid of. I replaced EGR with new and removed and cleaned tube thoroughly. I changed a few of the vacuum lines that had wear and still no luck of ridding this code.

Any suggestions on where to look next?
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