Turbo Boost Sensor: Testing and Inspection

Turbo Boost Sensor Testing and Inspection Procedure

At idle, the scan tool will display boost pressure about the same reading as barometric pressure. When at a full load, with Wide Open Throttle (WOT) the boost pressure will indicate high pressure or voltage. When at a decel with throttle closed, the boost sensor will display low pressure or voltage. The boost pressure reading is the opposite of what you would measure on a vacuum gage. When manifold pressure is high, vacuum is low. A failure in the boost sensor circuit should set a DTC 61 or DTC 62. Refer to Diagnostic Trouble Code Charts/Diagnostic Charts. Testing and Inspection