2000 impala 3.4eng code P0405
charles thompson
12-08-2010, 07:40 PM
hello new to this site like to say hello. my problem is the egr. the manuel says you can check the voltage at the plug of the egr. i did but the pin that should have 12volts only has 1volt but the pin that should have 5volts does. could this be the problem our is the egr shot ?
danielsatur
12-08-2010, 08:12 PM
P0405 - indicates a problem with the EGR system.
Suspect-
EGR Valve
Cleaning EGR valve + EGR gase passages.
Check connections going to the EGR valve.
Suspect-
EGR Valve
Cleaning EGR valve + EGR gase passages.
Check connections going to the EGR valve.
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