check engine light fails to come on.

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during emissions inspection the check engine light failed to come on. What are the possible causes and How can this be fixed.

iwans in Fairfax VA

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Mar 4, 2012

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1 Reply

Popular Answer
user91328on Mar 4, 2012

bulb could be bad, fuse on control circuit may be blown or the pcm is defective. it needs a diag from a tech to determine the needed repair. Roy

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