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Symptom: P1721-LINE PRESSURE SENSOR FAULT When Monitored and Set Condition: P1721-LINE PRESSURE SENSOR FAULT When Monitored: Continuously with engine running. Set Condition: If the Line Pressure Sensor (LPS) voltage is below 0.2 volts or above 4.75 volts the code will be set. POSSIBLE CAUSES INTERMITTENT WIRING AND/OR CONNECTORS 5-VOLT SUPPLY CIRCUIT OPEN GROUND CIRCUIT OPEN LINE PRESSURE SENSOR SIGNAL CIRCUIT OPEN 5-VOLT SUPPLY CIRCUIT SHORT TO GROUND LINE PRESSURE SENSOR SIGNAL CIRCUIT SHORT TO GROUND LINE PRESSURE SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE LINE PRESSURE SENSOR TCM - HIGH LINE PRESSURE SENSOR TCM - LOW LINE PRESSURE SENSOR TEST ACTION APPLICABILITY 1 NOTE: Low fluid level can be the cause of many transmission problems. If t, read the engine DTC’s. Check and repair all engine DTC’s prior to performing transmission symptom diagnostics. t, read Transmission DTC’s. Record all DTC’s and 1 Trip Failures. NOTE: Diagnose 1 Trip Failures as a fully matured DTC. 45RFE AUTO TRANS Continue 95 TRANSMISSION |