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Home >> Jeep >> 2005 >> Wrangler X, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 628 (Powertrain Diagnostic Procedures - DRIVEABILITY - NGC Symptoms & Diagnostic Tests (DTCS P0016 To P0563)) >> DRIVEABILITY - NGC - Diagnostic Tests >> P0171-Fuel System 1/1 Lean P0174-Fuel System 2/1 Lean (Gas - NGC) >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2004 Dodge Pickup and 2004 Dodge Cab & Chassis. 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. MAP SENSOR OPERATION
  10. ECT SENSOR OPERATION
  11. ENGINE MECHANICAL PROBLEM
  12. FUEL FILTER/PRESSURE REGULATOR (HIGH)
  13. PCM
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