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Home >> Mazda >> 2002 >> MX-5 Miata Base, Standard >> 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 Powertrain Control Module (PCM) has not received a voltage change from neutral switch when gears are engaged 14 times or more and vehicle speed is 18.6 MPH or more, it determines that neutral switch circuit has malfunction. This is a continuous monitor (CCM). MIL illuminates if PCM detects malfunction condition in 2 consecutive drive cycles. Pending code is available if PCM detects malfunction conditions during first drive cycle. Freeze Frame Data is available and DTC is stored in the PCM memory.