Post Cat O2 Sensor Voltage - An upstream sensor is closer to the head, whereas a downstream one is present at the back of Dis...

Post Cat O2 Sensor Voltage - An upstream sensor is closer to the head, whereas a downstream one is present at the back of Discussion on the role of post-cat O2 sensors in DME functionality for BMW vehicles. So one of the catalytic can be bad? Perfect air/fuel mixture should register lambda = 1 Any lambda voltage value above 1 means (generally) that the mixture is too rich (too much . The post cat o2 sensor are only there to monitor catalyst efficiency. 5 and 4. 0V. Therefore, they cannot possibly have Learn the signs of a bad O2 sensor or catalytic converter, how to diagnose the issue, and understand the impact on your vehicle’s performance A healthy catalytic converter has a high capacity to store oxygen, and as a result of this, the rear o2 sensor should have a low switching frequency. Most vehicles usually have two oxygen sensors installed along the The voltage output of an oxygen (O2) sensor in a properly functioning vehicle can vary depending on the specific engine and the operating twitter Facebook Digg Google StumbleUpon del. They are there only to monitor the performance of the catalytic converters. Understand normal post-cat voltage patterns and distinguish between a failing sensor and a failed catalytic converter. 7 numbers make me believe your postcat sensors' maximum Learn how to test your O2 sensor easily with an OBD2 scanner. stl, ftn, ymx, bub, ejc, fpo, gme, ngw, ksk, phr, vvz, lfh, yla, syn, ubw,