Can a P0420 code be caused by dirty EGR valve?
#1
Can a P0420 code be caused by dirty EGR valve?
Got a P0420 code but also shakes periodically at idle. Have read before on here that shakey/rough idle can be cause by dirty EGRV. Haven’t checked O2 sensor yet but thinking the problems have merged. would appreciate any feed back.
Thanks in advance
Thanks in advance
Thread
Thread Starter
Forum
Replies
Last Post