2000 Century EGR code 0403

csordi30

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Vehicle: 2000 Buick Century 3100 automatic 200,000kms.

The above vehicle has an EGR code - P0403. It gets terrible gas mileage and has a rough idle. Does anyone have a wiring diagram for the 5 pin connnector at the egr solenoid. I would rather know for sure if it is the wiring or the solenoid itself.

Thanks in advance for any help.


Cedric
 

Jim Fairbanks

wrench
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Nov 17, 2006
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Pull the EGR valave off and clean it out and the passages going to it....probably got some carbon in the valve not letting the pintle seat like it should....here is a diagram of the connector...Jim

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