P0506
Idle Control System RPM Lower Than Expected
Generic code
Vehicle Speed and Idle Control System
High severity
Moderate repair
Free on OBD DashX
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What P0506 means
- The fault code P0506 indicates that the engine’s idle control system is operating below the expected RPM level. This may cause the vehicle to stall or run poorly.
Possible symptoms
- Engine stalls or runs poorly at idle
- Illuminated check engine light
- Rough idle or surging
- Reduced engine power or acceleration
Possible causes
- Dirty or faulty throttle body
- Malfunctioning idle air control valve
- Faulty mass airflow sensor
- Vacuum leaks in the intake system
- Faulty or damaged wiring in the idle control system circuit
Related parts
- Idle Air Control System: IAC (Idle Air Control) System controls the speed of the engine when it is idling. This car's engine may keep stalling due to problems with the IAC
Possible solutions
- Clean or replace the throttle body
- Replace the idle air control valve
- Replace the mass airflow sensor
- Inspect and replace any damaged vacuum hoses or components
- Check and repair any damaged wiring in the idle control system circuit
Free on OBD DashX
P0506 on OBD DashX
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