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• When Monitored: • Set Condition: Possible Causes BOOST PRESSURE SENSOR 5-VOLT SUPPLY CIRCUIT OPEN BOOST PRESSURE/INTAKE AIR TEMPERATURE SENSOR BOOST PRESSURE SENSOR SIGNAL CIRCUIT SHORTED TO GROUND BOOST PRESSURE SENSOR SIGNAL AND GROUND CIRCUITS SHORTED TOGETHER BOOST PRESSURE SENSOR SIGNAL CIRCUIT OPEN ENGINE CONTROL MODULE Diagnostic Test 1. READ THE BOOST PRESSURE SENSOR VOLTAGE ON THE SCAN TOOL NOTE: If DTC P0641, P0651 or P0697 is present with this DTC, With the scan tool, read the Boost Pressure Sensor voltage. Is the voltage below 0.2 volt? Yes >> Go To 2 No >> Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE - DIAGNOSIS 9 - 870 ENGINE DIESEL DIAG KJ |