Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the car's system that helps reduce pollution. It's like when a fan that blows extra air into the engine isn't working right.
The P0419 code indicates a malfunction in the secondary air injection system's control circuit, specifically circuit 'B'. This system helps reduce emissions by injecting air into the exhaust stream to help burn off excess fuel.
The Secondary Air Injection System is designed to reduce emissions by injecting fresh air into the exhaust stream. The control circuit 'B' is responsible for managing part of this system. When the PCM (Powertrain Control Module) detects a fault in this circuit, it sets the P0419 code.
• Check Engine Light illuminated
• Failed emissions test
• Poor engine performance
• Unusual noises from the air pump
• Faulty air injection pump
• Damaged or corroded wiring or connectors
• Faulty relay or fuse
• PCM malfunction
PCM: Powertrain Control Module, the computer that controls engine functions.
Secondary Air Injection: A system that injects air into the exhaust to reduce emissions.
• Use an OBD-II scanner to confirm the code.
• Inspect the air injection pump and related wiring for damage.
• Check the relay and fuse for the air injection system.
• Test the PCM for faults.
• Replace the faulty air injection pump.
• Repair or replace damaged wiring or connectors.
• Replace the faulty relay or fuse.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
• Relay tester
$150 - $600
Moderate
• Chevrolet Silverado
• Ford F-150
• Toyota Camry
• Regular maintenance of the air injection system
• Routine inspection of wiring and connectors
• Timely replacement of air filters
Emission Control System
• Address the issue promptly to avoid failing emissions tests.
• Consult a professional mechanic if unsure about repairs.
Repairs may be covered under the vehicle's emissions warranty.
The P0419 code has been associated with vehicles that have a history of air injection system issues, particularly in older models.
Moderate – Addressing this issue is important to prevent emissions test failures and potential engine performance issues.
Driving with a malfunctioning emissions system can lead to fines and is harmful to the environment.
• Engine at operating temperature
• Vehicle in a safe and ventilated area
The secondary air injection pump is typically located near the front of the engine bay, close to the exhaust manifold.
Q: Can I drive with a P0419 code?
A: While the vehicle may still run, it's not advisable to drive for extended periods as it can lead to increased emissions and potential engine issues.
Q: How can I reset the P0419 code?
A: You can reset the code with an OBD-II scanner, but it's important to fix the underlying issue first to prevent the code from returning.
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