Inspection/Maintenance System DTC Table

2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 FSECTION Inspection/Maintenance System DTC Table
WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
INSPECTION/MAINTENANCE SYSTEM DTCS

System DTCs Required To Set System Status To YES
Catalyst P0421 Or P0431
EVAP System P0440, P0442, P0446, P0455 Or P0496
Oxygen Sensor System P0133 Or P0153
Oxygen Sensor Heater P0135, P0141, P0155 Or P0161
RENDER: 1.0x

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When to See a Mechanic

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

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