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Diagnostic Aids

WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 2003 Mazda B4000, 2003 Mazda B3000, 2003 Mazda B2300, 2002 Mazda B4000, and 2002 Mazda B3000. However, it is still accessible from the selected car via links, so may be relevant.

Fuel-contaminated engine oil may set some DTCs and effect engine performance. If oil is suspect, remove PCV valve from valve cover and repeat RETRIEVING DIAGNOSTIC TROUBLE CODES (QUICK TEST)  under SELF-DIAGNOSTIC SYSTEM. If problem is corrected, change engine oil.

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