P0506
Idle Air Control System RPM Lower Than Expected
2008-2008 Mazda Tribute 2.5L I4
Moderate SeverityPowertrainGeneric (SAE)
The 2008 Mazda Tribute is equipped with a 2.5L inline-4 engine. Below you'll find detailed p0506 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
The idle speed is consistently below the target RPM.
Symptoms
- Low idle speed
- Stalling
- Rough idle
Common Causes
- Carbon buildup in throttle body
- Vacuum leak
- Faulty IAC valve
- Low fuel pressure
- EGR valve stuck open
Diagnostic Steps
- Clean throttle body
- Check for vacuum leaks
- Test IAC valve
- Test fuel pressure
- Check EGR valve
Repair Notes
Clean throttle body and IAC. Check for vacuum leaks.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P0506 on Other Vehicles
Common Questions
What does code P0506 mean on a 2008-2008 Mazda Tribute?
P0506 stands for "Idle Air Control System RPM Lower Than Expected". The idle speed is consistently below the target RPM.
What are the symptoms of P0506 on a Mazda Tribute?
Common symptoms of P0506 include: Low idle speed, Stalling, Rough idle.
What causes P0506 on a 2008-2008 Mazda Tribute?
Common causes of P0506 include: Carbon buildup in throttle body, Vacuum leak, Faulty IAC valve, Low fuel pressure, EGR valve stuck open.
Last updated: March 2026