help needed for 2001 impala

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07-20-2010, 10:34 PM

lrepilot

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help needed for 2001 impala

The check engine light is on and my OBDII diagnostic says that the fault is P1404 EGR closed position performance. I replaced the EGR valve, and still get the same fault.....Any ideas?

Ken

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07-21-2010, 06:44 AM

golgo13

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i would check for blockage in the egr port in the intake manifold and of course check the wiring itself and at the plug.

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07-21-2010, 07:36 AM

BillBoost37

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Interesting. I'd check the ground and 5 volt to the valve. The closed position only needs to be off by .29 volts to toss this code. The PCM is reading the actual position of the valve.