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HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 238 (ENGINE CONTROLS - SELF-DIAGNOSTICS - 4.3L)DIAGNOSTIC TESTSDTC P0125: EXCESSIVE TIME TO ENTER CLOSED LOOP FUEL CONTROLCONDITIONS FOR RUNNING DTC
1999 GMC Forward Control 5.7 R, Automatic

Conditions For Running DTC

1999 GMC Forward Control 5.7 R, AutomaticSECTION Conditions For Running DTC
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Sonoma, 2003 GMC Safari, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.
  • DTCs P0101, P0102, P0103, P0112, P0113, P0116, P0117, P0118, P0500, P0502, or P0503 not set.
  • Intake air temperature is 19-131°F (-7 to 55°C).
  • The start-up coolant temperature is -33 to 83°F (-36 to 28.5°C).
  • Mass air flow is 15-75 g/s with the average more than 12 g/s.
  • Vehicle speed is more than 5 MPH for more than 0.5 mile.
  • Engine is running between 120-2100 seconds.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.