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Home >> Lexus >> 2012 >> IS 250 Base, AWD >> Repair and Diagnosis >> Engine Mechanical >> Starter >> Smart Access System (Keyless Start) (Diagnostic Codes & Symptom Tests) >> Smart Access System With Push-Button Start >> DTC B2275: STSW Monitor Malfunction >> Description

DTC B2275: STSW Monitor Malfunction: Description

This DTC is output when there is an open, short, or any other problem in the engine start request output circuit inside the power source control ECU or in the external circuit.

HINT: 

When the power source control ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

DTC No. DTC Detection Condition Trouble Area
B2275 ST output circuit (engine starting request signal circuit) inside power source control ECU or other related circuit is malfunctioning
  • AM2 fuse
  • ECM
  • Steering lock ECU
  • Power source control ECU
  • Wire harness or connector
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