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Home >> Subaru >> 2016 >> WRX Premium, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Controls (Diagnostics) (H4DOTC) (WRX-STI)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0506 Idle Control System Rpm - Lower Than Expected >> Trouble Symptom

DTC P0506 Idle Control System Rpm - Lower Than Expected: Trouble Symptom

WARNING: This page is about a different variant/trim than selected.
CAUTION: After servicing or replacing faulty parts, perform Clear Memory Mode < Ref. to OPERATION , Clear Memory Mode. >, and Inspection Mode < Ref. to PROCEDURE , Inspection Mode. >.
DIAGNOSTIC PROCEDURE

Step Check Yes No
1 CHECK FOR ANY OTHER DTC ON DISPLAY.  Is any other DTC displayed? Check the appropriate DTC using the "List of Diagnostic Trouble Code (DTC)". < Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . > Go to step 2. 
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? Replace the air cleaner element. < Ref. to AIR CLEANER ELEMENT . > Go to step 3. 
3 CHECK ELECTRONIC THROTTLE CONTROL. 
  1. Remove the electronic throttle control. < Ref. to REMOVAL , Throttle Body. >
  2. Check the electronic throttle control.
Are foreign matter found inside electronic throttle control? Remove foreign matter from electronic throttle control. Perform the diagnosis of DTC P2101. < Ref. to DTC P2101 THROTTLE ACTUATOR "A" CONTROL MOTOR CIRCUIT RANGE/PERFORMANCE , Diagnostic Procedure with Diagnostic Trouble Code (DTC). >