Diagnostic Aids: Notes

2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Notes
WARNING: This page is about a different car, the 2006 Chevrolet Monte Carlo and 2006 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
  • A damaged rear wheel speed sensor ring can cause failure type byte 04 (Erratic Signal) to set.
  • If 2 or more wheel speed sensors are inoperative, diagnose each wheel speed sensor individually.
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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.