CEL HELP?
07-29-2022, 03:52 PM
#1
Junior Member
Thread Starter
CEL HELP?
Receiving codes P2097 & P0420 on my Stock C63s , i have seen some of you post these same codes but after running DP. Was wondering what would be causing this on a stock car? Thanks
07-29-2022, 09:44 PM
#2
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MY'14 W212 M276 3.5NA @60kMi
troubleshoot vs. swap...
The last thing you'll want to do is replace a new cat to find out... "same difference!"
Changing or swapping L/R sensors a pretty good idea to exercise connectors.
How are the fuel trims:
trustable in-line -Or all the way near bad??
(All these parts should be replaced in pairs to keep the banks near balanced)
07-30-2022, 03:48 AM
#3
Junior Member
Thread Starter
Your ECU is flagging a cat as questionable. That says rich mixture is not reduced as expected...
The last thing you'll want to do is replace a new cat to find out... "same difference!"
Changing or swapping L/R sensors a pretty good idea to exercise connectors.
How are the fuel trims:
trustable in-line -Or all the way near bad??
(All these parts should be replaced in pairs to keep the banks near balanced)
The last thing you'll want to do is replace a new cat to find out... "same difference!"
Changing or swapping L/R sensors a pretty good idea to exercise connectors.
How are the fuel trims:
trustable in-line -Or all the way near bad??
(All these parts should be replaced in pairs to keep the banks near balanced)
07-30-2022, 03:58 AM
#4
Junior Member
Thread Starter
Your ECU is flagging a cat as questionable. That says rich mixture is not reduced as expected...
The last thing you'll want to do is replace a new cat to find out... "same difference!"
Changing or swapping L/R sensors a pretty good idea to exercise connectors.
How are the fuel trims:
trustable in-line -Or all the way near bad??
(All these parts should be replaced in pairs to keep the banks near balanced)
The last thing you'll want to do is replace a new cat to find out... "same difference!"
Changing or swapping L/R sensors a pretty good idea to exercise connectors.
How are the fuel trims:
trustable in-line -Or all the way near bad??
(All these parts should be replaced in pairs to keep the banks near balanced)
car also feels a bit sluggish after these CEL , but it might be the hot summer weather not sure.
