Tahoe 4WD V8-393 6.5L DSL Turbo VIN S (1995)
Barometric Pressure Sensor: Testing and Inspection
A scan tool displays Exhaust Gas Recirculation (EGR) pressure in volts. Low pressure (high vacuum) reads a low voltage while a high pressure
(low vacuum) reads a high voltage. A failure in the EGR control pressure/Barometric Absolute Pressure (BARO) sensor circuit should set a
Diagnostic Trouble Code (DTC) 31 or 33 and using the chart will find the cause of the problem. Any other failure in the EGR system should set a
DTC 32, 44 or 45. On vehicles using only a BARO sensor a failure in the sensor circuit should set a DTC 31 or 33. Refer to Diagnostic Trouble
Code Charts/Diagnostic Charts. See: Testing and Inspection
Also refer to EGR Control Pressure/BARO Sensor Output Check. See: Testing and Inspection
