ertech

Hi guys
When I try to do a test on MAF and gas recirculations
DAS is asking for 3 prerequisites
1- engine temp above 80
2-water temp above 80
3- lambda over 1

When I try the test the lamda value is always at 0
Car is a 07 gl320
Thanks
Erick

Plutoe

If you are doing the test correctly all cars have to be a running temp---run the car around the block get it up to temp and post the test sequence!!

ertech

Lamda value does not pass 0 even after a long drive
Thanks

alx

you are in an open loop for some reason or you are running very rich (unlikely)

open loop is forced when engine is cold or if there is a failure of the closed loop system. are you sure you are not throwing other codes?

ertech

No other codes
Actually car is taking way more diesel than before
Thanks

alx

then it is possible to have lambda value of 0 (infinite rich). do not drive until you determine cause or you are risking in plugging up the dpf.

ertech

Can you point me in the right direction?what to check?
Thanks