Questions & Answers for: Mercedes-Benz symptoms if o2 sensor has failed

...failed cat, it could be that one or the other of the O2 sensors are bad and causing an indicated cat malfunction. I'd have at least a couple other places look at the car and see whether it's the cats ...

...symptoms.  MAF, O2 sensor, wiring harness, and a long list of other things were replaced with no improvement.  My experience has been the coolant sensor or coils are to blame!  Ohms ...

...Its a 1991 auto...any advice would be greatly appreciated. Thanks! Paul. check all your sensors. then check the computer. if something is failing like the O2 sensor, then that would be your ...

...sensor. Thanks for the help I didn't get. The crankshaft position sensors tend to fail. Symptoms of this are: The engine will crank?but not start?especially when the engine is warm. The car may start ...

...interval I would just do the fronts. They connect to the engine wire harness in the front of the transmission pan. You may need an o2 sensor socket to remove the fronts. They are just a 22mm. in

I have codes indicating that all 4 o2 sensors need replacing on my 2001 sl500. any other possibilities? No you don't. Codes do not tell you to replace anything.You have OBD2 Codes indicting a ...

sensor is satisfied,the computer goes to closed loop & uses the O2 Sensors toadjust fuel (short term)You need the codes produced to diagnose the issueThere could be several things that effect fuel

...O2 performance which gives a clue to the problematic area. The Mass Airflow sensor will also cause this problem. It would be accompanied by a code such as P0100 -- Mass Airflow circuit malfunction. ...

symptoms of a bad catylactic converter and 02 sensors? if the catalytic was plugged you will not accelerate as you normally would. it may set the check engine light as well and set a code. the same is

symptoms of a failed crankshaft position sensor are poor acceleration, engine vibrations, poor throttle response, bad fuel economy, hesitation, engine stalls. The engine starts if you let it cool down