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Home >> Mazda >> 2003 >> MX-5 Miata Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0850: Neutral Switch Input Circuit Malfunction >> Detection Condition

Detection Condition

DTC is set when PCM has not received a voltage change from neutral switch when gears are shifted more than 14 times and vehicle speed is more than 18.6 MPH. PCM determines that neutral switch circuit has malfunction. This is a Continuous Monitor (CM). MIL illuminates if PCM detects malfunction condition in 2 consecutive drive cycles. Pending code is available if PCM detects malfunction condition during first drive cycle. Freeze Frame Data is available and DTC is stored in PCM memory.

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