Section 56 (Engine Controls - Self-Diagnostics): Summary
WARNING: This page is about a different car, the 2003 Mazda MPV and 2002 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
If no diagnostic trouble code is present but driveability problems are still present, proceed to TROUBLE SHOOTING - NO CODES article for symptom diagnosis or intermittent diagnostic procedures.