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Home >> Subaru >> 2017 >> Forester 2.0XT Touring >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 16 (Engine Control System (Diagnostics) (P000A To P015B) (H4DO)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0031 A/F/O2 Heater Control Circuit Low Bank 1 Sensor 1 >> Component Description

Component Description

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  1. Battery voltage
  2. Front oxygen (A/F) sensor heater output voltage
  3. 128 ms
  4. Low error
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