1997 Mazda B2300 Base, AutomaticFACTORY OEM SERVICE PROCEDURE

Catalyst Monitor Repair Verification Drive Mode

  1. Refer to and complete the Preparation before initiating the following repair verification steps.
  2. Start the engine and drive the vehicle for 25 minutes.
    1. Drive in stop-and-go traffic for 20 minutes, include six different constant speeds between 40-72 km/h (25 45 mph).
    2. Drive on expressway or highway for an additional 5 minutes.
  3. With the ignition key ON (vehicle at idle or engine off), check for Retrieve/Clear Continuous DTCs.
Factory Service Tools

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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.

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