Section 22 (Engine Controls - Self-Diagnostics): Summary
WARNING: This page is about a different car, the 2001 Mazda Tribute, 2001 Mazda B4000, 2001 Mazda B3000, 2001 Mazda B2500, and 2001 Mazda B2300. However, it is still accessible from the selected car via links, so may be relevant.
If no DTC is present but driveability problem still exists, go to TROUBLE SHOOTING - NO CODES article for symptom diagnosis or intermittent diagnostic procedures.