P0419
AIR System Control B Circuit
P0419 is an OBD-II diagnostic trouble code meaning: AIR System Control B Circuit. Common causes: open or short circuit in wiring harness, solenoid valve malfunction. Estimated repair cost: $56–167.
Symptoms
- Check Engine Light Is On
- Reduced engine efficiency
- Increased emissions of harmful substances
Causes
- Open or short circuit in wiring harness
- Solenoid valve malfunction
- Problems with the engine control unit (ECU)
- Contamination or blockage of the secondary air supply system
How to Fix
- Check the wiring harness for damage
- Check the operation of the solenoid valve
- Clean the secondary air system
- Check engine control unit (ECU)
Related codes
Error P0419 by Vehicle Brand
FAQ
What does the P0419 code mean?
P0419 is an OBD-II diagnostic trouble code that indicates: AIR System Control B Circuit
What causes a P0419 error code?
The most common causes of P0419 include: Open or short circuit in wiring harness; Solenoid valve malfunction; Problems with the engine control unit (ECU); Contamination or blockage of the secondary air supply system.
How do I fix a P0419 diagnostic trouble code?
To fix P0419: Check the wiring harness for damage. Check the operation of the solenoid valve. Clean the secondary air system. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0419?
Limited driving only, diagnose soon
How much does it cost to fix P0419?
The estimated repair cost for P0419 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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