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Home >> Subaru >> 2018 >> Crosstrek Base, Automatic CVT Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (3 Of 4) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0851: Park/Neutral Switch Input Circuit Low >> Diagnostic Method
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Diagnostic Method

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE SPECIFICATION

Malfunction Criteria Threshold Value
Voltage of the neutral position switch signal 1.2 V or less

Time needed for diagnosis:  6.4 s

Malfunction indicator light illumination:  Illuminates when malfunction occurs in 2 continuous driving cycles.



Judge NG when the malfunction criteria below are completed determined times or more after the neutral SW change.

JUDGMENT VALUE SPECIFICATION

Malfunction Criteria Threshold Value
Neutral switch output voltage Battery voltage x 0.19 V or less

Time needed for diagnosis:  3time (s)

Malfunction indicator light illumination:  Illuminates when malfunction occurs in 2 continuous driving cycles.