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 a part of the car that helps clean the air coming out of the engine. It's like when you have a fan that helps blow out smoke from a kitchen, and the fan isn't working right.
The P1419 code indicates an issue with the secondary air injection system, specifically the mass flow sensor circuit. This system helps reduce emissions by injecting air into the exhaust stream.
The secondary air injection system is designed to reduce emissions by injecting fresh air into the exhaust system. The mass flow sensor monitors the amount of air being injected. If the sensor circuit is malfunctioning, it can lead to incorrect readings and affect the system's performance.
• Check Engine Light is on
• Poor engine performance
• Increased emissions
• Faulty secondary air mass flow sensor
• Wiring issues or poor electrical connections
• Malfunctioning air injection pump
Secondary Air Injection: A system that reduces emissions by injecting air into the exhaust stream.
Mass Flow Sensor: A device that measures the amount of air flowing into the engine or exhaust system.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections to the mass flow sensor.
• Test the secondary air mass flow sensor for proper operation.
• Replace the secondary air mass flow sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Ensure the air injection pump is functioning correctly.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• BMW 3 Series
• Mercedes-Benz C-Class
• Volkswagen Passat
• Regularly inspect and maintain the air injection system.
• Check for and repair any exhaust leaks.
• Ensure all electrical connections are secure.
Sensor Issue
• Address the issue promptly to avoid increased emissions.
• Consult a professional mechanic if unsure about repairs.
Check with your vehicle manufacturer for specific warranty coverage on emissions-related components.
The P1419 code has been associated with vehicles that have secondary air injection systems, which are more common in European models.
Moderate – It should be addressed soon to prevent potential emission test failures.
Driving with a malfunctioning emissions system can lead to increased pollution and may be illegal in areas with strict emissions regulations.
• Engine running
• Cold start conditions
The secondary air mass flow sensor is typically located near the air injection pump or in the air intake system.
Q: Can I drive with a P1419 code?
A: While the car may still be drivable, it's best to fix the issue to avoid increased emissions and potential legal issues.
Q: What happens if I ignore the P1419 code?
A: Ignoring the code can lead to higher emissions, potential engine performance issues, and failing an emissions test.
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Fitment Required · Vehicle-fitment part
Relevant for airflow, fuel-trim, and intake-metering faults after confirming the sensor is actually at fault.
Airflow and fuel-trim codes can involve the mass air flow sensor after proper diagnosis.
Verify the sensor design and fitment for your exact vehicle.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.