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Home >> Dodge and Ram >> 2003 >> Durango Base, 5.9 Z, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 103 (Powertrain Diagnostic Procedures) >> Diagnostic Information And Procedures >> DRIVEABILITY - NGC - Diagnostic Tests >> P0171-Fuel System 1/1 Lean, P0174-Fuel System 2/1 Lean >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2004 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
  1. GOOD TRIP EQUAL TO ZERO
  2. RESTRICTED FUEL SUPPLY LINE
  3. FUEL PUMP INLET STRAINER PLUGGED
  4. FUEL PUMP MODULE
  5. O2 SENSOR
  6. O2 SIGNAL CIRCUIT
  7. O2 RETURN CIRCUIT
  8. O2 SENSOR HEATER OPERATION
  9. THROTTLE POSITION SENSOR VOLTAGE GREATER THAN 0.92 VOLTS WITH THROTTLE CLOSED
  10. THROTTLE POSITION SENSOR SWEEP
  11. MAP SENSOR
  12. ECT SENSOR
  13. ENGINE MECHANICAL PROBLEM
  14. FUEL FILTER/PRESSURE REGULATOR (HIGH)
  15. PCM
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