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Home >> Subaru >> 2023 >> BRZ Limited, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (3 Of 4) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P1109: Detected Throttle Deposit >> General Description >> Diagnostic Method
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Diagnostic Method

Always perform the diagnosis continuously.

JUDGMENT VALUE SPECIFICATION

Malfunction Criteria Threshold Value
ISC flow rate learning value 95% or more of maximum learning amount
Deposit accumulation 50% or more
Amount of time when all of the conditions above are met 10 s or more continuously

Time needed for diagnosis:  10 s or more

Malfunction indicator light illumination:  Illuminates when malfunction occurs in 5 continuous driving cycles.