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Diagnostic Aids

WARNING: This page is about a different car, the 2002 Ford Escape, 2001 Mazda Tribute, and 2001 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

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

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