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Mazda
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2003
›
B2300 Base, Automatic
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Repair and Diagnosis
›
Engine Performance
›
System
›
Engine Controls - Self-Diagnostics
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Diagnostic Tests
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DTC P0131 Or DTC P0151
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Possible Causes
Possible Causes
Possible causes are:
Contaminated HO2S.
Crossed HO2S signal wiring or signal return wiring.