P0519
Idle Air Control System Performance
P0519 is an OBD-II diagnostic trouble code meaning: Idle Air Control System Performance. Common causes: idle air valve is dirty or faulty, problems with the iac wiring harness or connectors. Estimated repair cost: $33–111.
Symptoms
- Unstable idle
- Floating speed
- Engine stalls at idle
- High or low idle speed
Causes
- Idle air valve is dirty or faulty
- Problems with the IAC wiring harness or connectors
- Throttle Position Sensor Malfunction
- Air leaks in the intake tract
- ECU software error
How to Fix
- Check the condition of the idle air valve, clean or replace if necessary
- Check the integrity of the wiring harness and contacts of the IAC system
- Check throttle position sensor
- Check the intake tract for air leaks
- Reset the error and check if it returns
Related codes
Error P0519 by Vehicle Brand
FAQ
What does the P0519 code mean?
P0519 is an OBD-II diagnostic trouble code that indicates: Idle Air Control System Performance
What causes a P0519 error code?
The most common causes of P0519 include: Idle air valve is dirty or faulty; Problems with the IAC wiring harness or connectors; Throttle Position Sensor Malfunction; Air leaks in the intake tract.
How do I fix a P0519 diagnostic trouble code?
To fix P0519: Check the condition of the idle air valve, clean or replace if necessary. Check the integrity of the wiring harness and contacts of the IAC system. Check throttle position sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0519?
Limited driving only, diagnose soon
How much does it cost to fix P0519?
The estimated repair cost for P0519 is $33–111. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat