May 22, 2017 · P0138 O2 Oxygen Sensor Circuit High Voltage (Bank 1, Sensor 2) P0037 O2 Oxygen Sensor Heater Control Circuit Low (Bank 1, Sensor 2) I guess I needed to be a little …

Aug 1, 2024 · The downstream sensors shouldn't have anything to do with the air fuel ratio. They are there to monitor the cats and make sure they are working properly. The upstream o2 …

Apr 8, 2021 · Can someone verify my understanding of the wiring on the O2 sensor plug. Pin 1 - O2 Heat - 12Volt + Pin 2 - Ground - 12Volt - Pin 3 - O2 Return (Upstream or Downstream) - ? …

Dec 7, 2023 · For few years, they actually used an O2 sensor to operate a duty cycle solenoid in the carb - basically a variable jet. But back to the OP's drive cycle, GTyankee's procedure will …

Nov 13, 2011 · The oxygen sensors that have a direct effect on fuel economy. The upstream oxygen sensors send their data back to the PCM to aid in determining the correct air-fuel ratio …

Jul 23, 2020 · The Oxygen Sensor Monitor and Catalyst Monitor will not complete. The system was reset a couple months ago when I disconnected the battery to calibrate a new HVAC …

Aug 19, 2018 · The 2003 5.7 HEMI only has 2 oxygen sensors. One at the inlet of the large catalytic converter and one after the outlet. The 2004+ 5.7 HEMI's are the ones with 4 oxygen …

Mar 20, 2022 · Can anyone tell me which is bank 1 sensor 1? I think I know just need to be sure because I'm old and forget where I am sometimes so could be wrong

Oct 16, 2020 · The upstream oxygen sensors switch from high to low, lean to rich, to maintain the commanded AFR, or Air Fuel Ratio. The downstream oxygen sensors are there to monitor the …

Jun 30, 2015 · I’m trying to change the bank 1 sensor 1 (driver side upstream) and have pulled the front drive shaft but can not seem to unclip the electrical, I can barely get my fingers on it …