bigwave

I have a 1998 jeep grand Cherokee Laredo that gives me a "check engine" light. when I read the codes it says B2E EGR system failure "active" . The jeep runs really well at almost any speed or condition but does have a rough idle sometimes. I'm still looking and find EGR info on other years but not the 1998. Any ideas

I also see a: B21 Active Engine is cold too long
U3F System Rich, R-Idle ADAP at lean limit

Bustedback

There is no EGR, stop looking. Your thermostat is stuck open.

bigwave

I figured that out a few hours ago, I'm now wondering why it gave me that error in the first place. I changed the thermostat a few months ago when I put all new hoses on it. The temp gauge shows all good and the heater works fine, so I'm thinking that error is from way back then and was never cleared out. The check engine light went off after clearing the: "B2E Active EGR system failure"
I guess I could have gotten a bad therm or they gave me one that is the wrong temp. ???