HOW TO KNOW IF OXYGEN SENSOR IS BAD demonstrated on BMW OBD Scanner used in the video: http://amzn.to/2xFdf2F more. Accurately testing your BMW's 6-pin oxygen (O2) sensor is crucial for diagnosing performance issues, poor fuel economy, and preventing costly catalytic converter damage. Unlike simpler 4-pin sensors, the 6.
I asked a while ago about how one would know if the O2 sensors were needing changed and it was suggested that I check the operation with my C310. All that shows is that the signals from the pre-cat sensors were at 1.99V and 2.0V and the post-cat ones were at 0.71V and 0.71V What, if anything. The best test jig for O2 sensors is parked in your driveway.
Bmw O2 Sensor Problems
Install the sensor, plug in your scanner, and initiate mode 5 testing. But best thing would be to get the code numbers before you go barking up the sensor bush. Sensors are blamed often, but fail rarely.
Last edited by rf900rkw; 11-02-2012 at 04:04 PM. I was not able to find this thread on here so I am posting it. Heres how you test the 4 lead Oxygen sensors that are found on our mistresses.
How to Replace Downstream O2 Oxygen Sensor Bank 1 Sensor 2 2009-2013 ...
Tools Needed: Vise or Vise grip Torch Volt Meter Step 1 Disconnect and Remove the suspect o2 sensor using a 22mm wrench. Step 2 Put the o2. This bulletin applies to BMW vehicles where DTC 118602 is found (oxygen sensor before catalytic converter, fine mixture control, exhaust gas after catalytic converter too lean).
This may be due to an actual engine related problem and/or DME software issues. Perform the following test plan using the latest version of ISTA. The Oxygen Sensor is usually to blame for problems in the car performance and gas consumption.
How To Test O2 Sensor With Scanner
It's stunning to discover that it's hard to fail. I can count many of my friends who went to mechanics for car checkups and ended up changing the Oxygen Sensor. It seems that the mechanics knowing that the Oxygen Sensor is something mysterious to many people will make them believe that it's broken.
Once you have determined which wire is the output signal wire, test the sensor as shown above. A heated oxygen sensor with two wires is usually wired like this (pic o2_sensor_diagram_2.jpg) One wire is 12 volts for the heating element. The other wire is the signal output wire to the fuel injection computer.
« Previous Thread Next Thread Testing O2 sensors. Discover common oxygen sensor faults in BMWs and learn how to diagnose them! We critique sensor quality and guide you to wiring diagrams on our diagnostic ch.
