G 2500 3/4 Ton Van V8-350 5.7L VIN K TBI (1995)
module what is happening in the exhaust. It does not cause things to happen. It is a type of gage: Low voltage output = lean mixture = high oxygen
content in exhaust; high voltage output = rich mixture = low oxygen content in the exhaust.
An open oxygen sensor, should set a DTC 13. A constant low voltage in the oxygen sensor circuit should set a DTC 44. A constant high voltage in
the circuit should set a DTC 45. DTC 44 and DTC 45 could also be set as a result of fuel system problems. Refer to Diagnostic Charts for
conditions that can cause a lean or rich system. The integral heater in the sensor will not set a DTC but is diagnosed in DTC 13 trouble chart and
"Diagnostic Aids."
