Car turned a code
#1
Car turned a code
Car has been sitting all winter except for the 2 week start up and run till it gets up to temp all the way. The last time it turned a SES code. Had it checked P0400 EGR air flow malfunction. What needs to be done?
#3
TECH Veteran
Maybe, maybe not. If the valve is not working due to the diaphragm leaking, then you would need a new valve. If the passages are just clogged up, you need to unclog them.