FixVault
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Mazda
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2003
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Protege5 Automatic
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Repair and Diagnosis
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Engine Performance
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Engine Controls - Self-Diagnostics
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Diagnostic Tests
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DTC P0850: Neutral Switch Input Circuit Malfunction
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Possible Causes
Possible Causes
Neutral switch malfunction.
Open in wiring between neutral switch and PCM.
PCM malfunction.