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

DTC detecting condition: 

Detected when two consecutive driving cycles with fault occur.

Trouble symptom: 

• Hard to start the engine.
• Engine does not start.
• Improper idling
• Engine stalls.
  CAUTION: After servicing or replacing faulty parts, perform Clear Memory Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>Clear Memory Mode>OPERATION . and Inspection Mode Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>Inspection Mode>PROCEDURE .

1. CHECK FOR ANY OTHER DTC ON DISPLAY. 

   Is any other DTC displayed?

   • Yes: Check the appropriate DTC using the "List of Diagnostic Trouble Code (DTC)". Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>List of Diagnostic Trouble Code (DTC) .
   • No: Go to 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?

   • Yes: Replace the air cleaner element. Ref. to INTAKE (INDUCTION) (H4DOTC)>Air Cleaner Element .
   • No: Go to  3.
3. CHECK ELECTRONIC THROTTLE CONTROL. 
   1. Remove the electronic throttle control. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DOTC)>Throttle Body>REMOVAL .
   2. 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 .