Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's engine is not running fast enough when it's just sitting still, like when you're stopped at a traffic light.
The engine control module (ECM) detects that the engine's idle speed is lower than the desired RPM.
The P0506 code indicates that the engine control module (ECM) has detected that the idle control system is not maintaining the engine idle speed as expected. This could be due to a malfunctioning idle air control valve, a vacuum leak, or other related issues causing the engine to idle at a lower RPM than specified.
• Engine stalls at idle
• Rough idle
• Check Engine Light illuminated
• Faulty idle air control (IAC) valve
• Vacuum leak
• Dirty throttle body
ECM: Engine Control Module
IAC: Idle Air Control
• Check for vacuum leaks
• Inspect the idle air control valve
• Clean the throttle body
• Replace the idle air control valve
• Repair any vacuum leaks
• Clean or replace the throttle body
• OBD-II scanner
• Vacuum gauge
• Throttle body cleaner
$100 - $300
Moderate
• Toyota Camry
• Honda Accord
• Ford F-150
• Regular maintenance of the throttle body
• Check for vacuum leaks periodically
• Ensure proper air filter maintenance
Engine Performance
• Have a professional mechanic inspect the vehicle if you're unsure.
• Avoid driving with the Check Engine Light on for extended periods.
Check with your vehicle manufacturer for warranty coverage on engine components.
This code has been commonly associated with idle control issues in vehicles with electronic throttle control systems.
Moderate – It should be addressed soon to prevent stalling and drivability issues.
Driving with a malfunctioning idle control system can lead to unexpected stalling, which may be dangerous.
• Engine at operating temperature
• Vehicle in Park or Neutral
The idle air control valve is typically located on or near the throttle body.
Q: Can I drive with a P0506 code?
A: While you can drive with this code, it is not recommended as it may lead to stalling and drivability issues.
Q: What happens if I ignore the P0506 code?
A: Ignoring this code can result in poor engine performance, increased fuel consumption, and potential engine stalling.
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