Post by
tmars04 »
https://forums.nicoclub.com/tmars04-u107513.html
Fri Oct 03, 2008 6:45 am
The Knock Sensor will not light the Check Engine Indicator. The EGR Flow Malfunction error is probably not the EGR Valve itself. From all that I read, they rarely go bad. I called the dealer, and he confirmed the above. Most likely a clogged hose from/to the EGR, or a temp sensor. I been driving my 1999 Maxima for a year with those codes, as the cost to repair seemed high for my Maxima with 136,000 miles on it. I periodically re-set the ECM. The Knock sensor error displays immediately, but the EGR flow indicator requires some driving to confirm the error. I'm going to clean the hoses to/from the EGR first this weekend. Other input is welcome. See other posts on this topic as well.