How to check the Diagnostic Code on a Mercedes?
Connect the code reader cables to pin 1 for the black or ground connection and pin 3 for the 12v supply on the 38 pin diagnostic socket. Select your chosen test point (module connection) to test from the following 38 pin socket diagram and connection pin-out table. 2. Turn ignition on, engine not running. 3.
How to fix a check engine light on a Mercedes Benz?
Hopefully you don’t have any serious problems with your car. If it is a Mercedes Benz you can use the search function on Mercedes Medic to see if there is an article that will show you how to fix what is wrong. Once you fix the problem then you can use your scanner again to erase or reset the check engine light.
What are the W140 diagnostic trouble codes for?
W140 Diagnostic Trouble Codes (DTC) – Models with M119 Engine Only! The pages in this document have the Diagnostic Trouble Codes (DTC’s) for the following models, all of which have M119 V8 engines with LH-SFI (LH Sequential Fuel Injection): 1992-1993 400SE, 400SEL, 400SEC (4.2L M119.971 engine)
What does the O2 sensor on a Mercedes Benz do?
The input values from the O2 sensor are used to adjust the fuel delivered to the engine. You can get O2 sensors at a fraction of dealer prices on Amazon, that will fit Mercedes Benz. Check this one here for example. Bad Catalytic Converter If these go bad they start to get clogged.
What to do if your Mercedes Benz check engine light comes on?
Your Mercedes-Benz expert will be able pinpoint the problem for you by connecting your Mercedes-Benz to a diagnostic scan tool. This tool will provide trouble codes stored in your electronic control system, and reveal why the check engine light came on.
Is there a diagnostic scanner for Mercedes Benz?
Mercedes-Benz Star Diagnostic DAS This is diagnostic scanner used at Mercedes-Benz dealerships. Yes, it can do anything including programming of sensors and features. Any of the scanners listed above can read and clear the Check Engine / Service Engine Fault Codes.
Where can I find the Mercedes Fault code?
Any of the scanners listed above can read and clear the Check Engine / Service Engine Fault Codes. The codes above are retrieved by plugging a diagnostic scanner into the OBD-II port located under the dash, and scanning for fault codes. Location of OBD II port used to retrieve Mercedes-Benz fault codes.