DTC P0507: Idle Control System Rpm - Higher Than Expected: Notes

DTC detecting condition:

Detected when two consecutive driving cycles with fault occur.

Trouble symptom:

Engine keeps running at higher speed than specified idle speed.

NOTE: After the faulty parts are repaired or replaced, perform the final check in Basic Diagnostic Procedure. Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE .

CHECK DTC.
1. Turn the ignition switch to ON.
2. Using the Subaru Select Monitor or a general scan tool, read the DTC of [Engine]. Ref. to COMMON (DIAG)>DIAGNOSTIC TROUBLE CODE (DTC) .
Is DTC P0507 displayed? (Current malfunction)

Yes: Go to 2.

No: Check the appropriate DTC using the "Diagnostic Trouble Code (DTC)". Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>DIAGNOSTIC TROUBLE CODE (DTC)>LIST .
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?

Yes: Repair air suction and leaks.

No: Go to 3.
CHECK ELECTRONIC THROTTLE CONTROL.
1. Turn the ignition switch to OFF.
2. Remove the electronic throttle control. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DOTC)>THROTTLE BODY>REMOVAL .
3. Check the electronic throttle control.
Are foreign matter found inside electronic throttle control?

Yes: Remove foreign matter from electronic throttle control.

No: Perform the diagnosis of DTC P2101. Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)>DTC P2101 THROTTLE ACTUATOR "A" CONTROL MOTOR CIRCUIT RANGE/PERFORMANCE .