P0419 Code - Secondary Air Injection System Relay 'B' Circuit Malfunction
Quick Answer
An air pump is used on the vehicle to lower tail pipe emissions on start-up. Common causes include Faulty Air Pump inoperative, Air bypass solenoid harness is open or shorted, Air bypass solenoid circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- P0419 indicates Secondary Air Injection System Relay 'B' Circuit Malfunction.
- Common causes
- Common causes include Faulty Air Pump inoperative, Air bypass solenoid harness is open or shorted, Air bypass solenoid circuit poor electrical connection.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Code P0419 Description
What are the Possible Causes of the DTC P0419?
- Faulty Air Pump inoperative
- Air bypass solenoid harness is open or shorted
- Air bypass solenoid circuit poor electrical connection
How to Fix the DTC P0419?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0419 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P0419 code?
Need more information on how to fix the P0419 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0419 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- P0419 Lexus — Secondary Air Injection System Relay 'B' Circuit Malfunction
- P0419 Mercedes-Benz — Secondary Air Injection System Relay 'B' Circuit Malfunction
- P0419 Toyota — Secondary Air Injection System Relay 'B' Circuit Malfunction
Frequently Asked Questions about P0419 Code
1. What are the common symptoms of OBDII code P0419?
Symptoms may include illuminated check engine light, rough engine idling, reduced engine performance, and increased fuel consumption.
2. What can cause the OBDII code P0419 to trigger?
The code P0419 is typically triggered by a malfunction in the secondary air injection system relay 'B' circuit, which controls the flow of air into the exhaust system.
3. How serious is the OBDII code P0419?
While the code itself may not cause immediate harm to the vehicle, it is important to address the underlying issue to ensure proper engine performance and emissions control.
4. How can I diagnose the cause of OBDII code P0419?
Diagnosing the issue may involve checking the secondary air injection system relay 'B', inspecting related wiring and connectors for damage, and testing the relay for proper function.
5. Can I drive my vehicle with the OBDII code P0419?
It is generally safe to drive the vehicle with the code P0419, but it is recommended to have the issue diagnosed and repaired as soon as possible to avoid potential long-term damage.
6. How can I repair the OBDII code P0419?
Repair options may include replacing the secondary air injection system relay 'B', repairing damaged wiring or connectors, or clearing any blockages in the air injection system.
7. Is it possible to reset the OBDII code P0419 without fixing the underlying issue?
While clearing the code may temporarily turn off the check engine light, the underlying issue causing the code will likely trigger it again if not properly addressed.
8. Can a DIY enthusiast fix the OBDII code P0419 at home?
Depending on the level of expertise and access to tools, some DIY enthusiasts may be able to diagnose and repair the code P0419 at home. However, consulting a professional mechanic is recommended for accurate diagnosis and repair.
9. How much does it typically cost to repair OBDII code P0419 at a mechanic?
Repair costs for the code P0419 can vary depending on the specific cause of the issue, but it may range from $100 to $300 for parts and labor, excluding any additional diagnostics or repairs.
10. Are there any recalls or technical service bulletins related to OBDII code P0419?
It is recommended to check with the vehicle manufacturer or authorized dealerships for any recalls or technical service bulletins related to the OBDII code P0419, as some vehicles may have known issues with the secondary air injection system.
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