What is the actual number for the short term? Remember the short term is telling us what is happening with the exhaust at this moment so if it is positive then the sensor is telling us that there is a lean condition and as Steve said it is commanding more fuel. However more fuel is causing the exhaust to glow so we need to find out why it is saying there is a lean exhaust when it appears to be rich due to the glowing cat.
This could be faulty o2 sensors. If only one side is glowing and the short term is positive on that side, what does the other bank say? What is the short term on that bank? If the number is lower or even negative, swap the o2 side to side and see if the glowing exhaust switches sides.
Then get the MAP/MAF sensor reading. Also the intake air temp reading and engine coolant temp. Lastly test the fuel pressure and let us know what it is.
Lots of info but please let us know each reading and we can figure this out. Thanks.
Saturday, February 1st, 2020 AT 7:32 AM