What is your question?
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What is your question?
The engine light is constant. The mechanic who looked at the codes said it was due to problems with the smog device and would cost $500 to fix.

1 Reply
you need a real diag from a tech familiar with the system. the 410 is egr related and nneds to be checked for the failed part. the 491 should also be done at the same time. cannot guess on part failures without diaging it properly. Roy