Hey guys,
I am trying to diagnose what I need to replace so I can pass emissions. I am throwing error code P0174. From what I understand, it can be the MAF or an O2 sensor. Below you will see images from my cell phones (torque app), which is bluetoothed to my ODB sensor. These readings are 30minutes into a drive.
My 1x2, and 2x2 02 sensors are pretty much stuck at constant voltage. Which is causing the fuel trim reading to be off? Should I just replace all the 02 sensors? Truck is a 2002 4.0 SOHC with 125k.
This is at an IDLE at stop light:
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This is cruising at 55mph:
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I am trying to diagnose what I need to replace so I can pass emissions. I am throwing error code P0174. From what I understand, it can be the MAF or an O2 sensor. Below you will see images from my cell phones (torque app), which is bluetoothed to my ODB sensor. These readings are 30minutes into a drive.
My 1x2, and 2x2 02 sensors are pretty much stuck at constant voltage. Which is causing the fuel trim reading to be off? Should I just replace all the 02 sensors? Truck is a 2002 4.0 SOHC with 125k.
This is at an IDLE at stop light:
This is cruising at 55mph:
