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Home >> Saab >> 2000 >> 9-3 Base, 2D Convertible, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - TRIONIC T7 Fuel Control System >> Diagnostic Tests >> DTC P1491-P1493: Tank Pressure Sensor & Fuel Level Sensor Problems Detected At Same Time (2000 Lev)

DTC P1491-P1493: Tank Pressure Sensor & Fuel Level Sensor Problems Detected At Same Time (2000 Lev)

  1. Determine if fuel gauge problems have been noticed by customer. If no problems were noticed, go to step  4. If problems with fuel gauge have been noticed, go to next step.
  2. Connect TECH 2 scan tool to Data Link Connector (DLC). Check for stored DTCs in MAIN INSTRUMENT UNIT (MIU). If DTC P1720 is not present, go to next step. If DTC B1720 is present, see appropriate INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT. After diagnosing and repairing DTC B1720, go to step  4.
  3. Check all electrical connections, terminals and wiring going to fuel level sensor in tank. See appropriate wiring diagram in WIRING DIAGRAMS article. Repair as necessary. If no problems were found after checking electrical circuit, replace fuel level sensor. See appropriate INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT. Go to next step.
  4. Go to DTC P1451-P1453: FUEL TANK PRESSURE (FTP) SENSOR MALFUNCTION  for remaining diagnostic procedures.
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