1995 Mercedes-Benz S420 4.2L Excessive Emissions, MIL Lamp on
MB specialists, please help. This Benz came in a couple of weeks ago with the CEL on and the codes listed stored. We hooked up directly to the O2 to watch it's performance. It was sluggish but had enough range and the system was switching properly, so we insta...
FIX posted 10/19/2005
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Message Closed w/FIX
Vehicle Data1995 Mercedes-Benz S420
Trouble Codes
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Message Closed w/FIX
Vehicle Data
1995 Mercedes-Benz S420
VIN | WDBGA43EOS |
Engine | 4.2 L / 8 cyl / GAS |
Trans | 4-speed Automatic |
Delivery | FI / LH module 021 545 71 32 |
Emissions | Not OBD-II Compliant |
Symptoms | Excessive Emissions, MIL Lamp On |
Occurs | Always |
Trouble Codes
1H | |
21 | O2S1 open/short circuit |
3 | Lambda Controll Inoperative |
DM |