Riviera V6-3.8L VIN K (1996)
EGR Valve Position Sensor: Description and Operation
DESCRIPTION
The PCM monitors the EGR valve pintle position input to ensure that the valve responds properly to commands from the PCM and to detect a fault it
the pintle position sensor and control circuits are open or shorted.
OPERATION
If the PCM detects a pintle position signal voltage outside the normal range of the pintle position sensor, or a signal voltage that is not within a
tolerance considered acceptable for proper EGR system operation, the PCM will set DTC P1406.
