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Home >> Subaru >> 2017 >> Forester 2.0XT Touring >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 17 (Engine Control System (Diagnostics) (P0171 To P0685) (H4DO)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0506 Idle Control System Rpm - Lower Than Expected >> Notes

DTC P0506 Idle Control System Rpm - Lower Than Expected: Notes

WARNING: This page is about a different variant/trim than selected.

DTC detecting condition: 

Detected when two consecutive driving cycles with fault occur.

Trouble symptom: 

CAUTION: After servicing or replacing faulty parts, perform Clear Memory Ref. to ENGINE (DIAGNOSTICS) (H4DO)>Clear Memory Mode>OPERATION . and Inspection Mode Ref. to ENGINE (DIAGNOSTICS) (H4DO)>Inspection Mode>PROCEDURE .
  1. CHECK FOR ANY OTHER DTC ON DISPLAY  .

    Is any other DTC displayed?

  2. CHECK AIR CLEANER ELEMENT  .
    1. Turn the ignition switch to OFF.
    2. Check the air cleaner element.

    Is there excessive clogging on air cleaner element?

  3. CHECK ELECTRONIC THROTTLE CONTROL  .
    1. Remove the electronic throttle control. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DO)>Throttle Body>REMOVAL .
    2. Check the electronic throttle control.

    Are foreign matter found inside electronic throttle control?