Yellow engine warning on with no diagnostics
For a couple of days a yellow engine warning sign has turned on, for the first seconds it turned on the car slightly started to vibrate and then continued to act normal.
The service could not diagnose the warning, The failure log file shown a too reach gas concentration on the exhaust, but after measuring the concentration it was appeared to be normal. The service guy claims that in order to diagnose a data logger should be installed in my car for a couple of days to record the event in realtimem otherwise he can't tell the reason for the warning.
till now, He had reset twice the car computer hoping it will not be shown again.
Anybody had the same experience ?
On Grand Cherokee 2011 LAREDO X 70anny. around 10,000 miles.