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Home >> Subaru >> 2017 >> Legacy 2.5i Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 14 (Engine Control System (Diagnostics) (P0161 To P0685) (H6DO)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0507 Idle Control System Rpm - Higher Than Expected >> Notes

DTC P0507 Idle Control System Rpm - Higher 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: 

Engine keeps running at higher speed than specified idle speed.

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.>.
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 INTAKE SYSTEM. 
  1. Start and idle the engine.
  2. Check the following items.
  • Loose installation of intake manifold and throttle body
  • Cracks of intake manifold gasket and throttle body gasket
  • Disconnection of vacuum hoses
Is there any fault in air intake system? Repair air suction and leaks. Go to step 3. 
3 CHECK ELECTRONIC THROTTLE CONTROL. 
  1. Turn the ignition switch to OFF.
  2. Remove the electronic throttle control.
  3. 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).>