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Home >> Subaru >> 2021 >> WRX STI >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostics) (2.5L) (2 Of 4) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0340: Camshaft Position Sensor "A" Circuit Bank 1 Or Single Sensor >> Diagnostic Method

Diagnostic Method

Diagnosis 1 

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
Number of camshaft position sensor signals during cranking = 0

time needed for diagnosis:  3000 ms

Diagnosis 2 

Judge as NG when no input status of camshaft position sensor signal continues for (10 time(s)+2)/2 revs.

JUDGMENT VALUE SPECIFICATION

Malfunction Criteria Threshold Value
Amount of camshaft sensor signal during 0.5 revs of crankshaft = 0

time needed for diagnosis:  (10 time(s)+2)/2 engine revs.

Malfunction indicator light illumination:  Illuminates as soon as a malfunction occurs.