What is secondary air injection?
Secondary air injection (commonly known as air injection) is a vehicle emissions control strategy introduced in 1966, wherein fresh air is injected into the exhaust stream to allow for a fuller secondary combustion of exhaust gases.
What is a secondary air injection solenoid?
The secondary-air shut-off valve ensures that secondary-air is only routed to the exhaust manifold in the cold starting phase. Secondary-air valves are either actuated by a vacuum controlled by a solenoid switching valve or open in response to the pressure of the secondary-air pump.
What is part number for secondary air injection sensor?
• P2433: Secondary Air Injection System Air Flow/Pressure Bank 1 Sensor Circuit High VW has released an updated sensor kit and secondary air injection pressure hose (part # 07K 198 125) that is less prone to contamination. On 2005-2008 vehicles, the sensor can be serviced separately using part number 07K 906 051.
What does the secondary air injection system do?
The Secondary Air Injection (AIR) System aids in the reduction of hydrocarbon exhaust emissions during a cold start-up. This occurs when the start-up engine coolant temperature ( ECT) is between 5-50°C (41-122°F), and the intake air temperature (IAT) is between 5-60°C (41-140°F).
What causes 2.5L secondary air injection sensor code p2431?
On models with the 2.5 CBTA-CBUA engine, the hose for the secondary air injection system can be contaminated by foreign particles. The contamination can cause the following codes: • P2431: Secondary Air Injection Airflow/Pressure Bank 1 Sensor Circuit Range/Performance
What kind of air injection does a Jetta have?
On 2005-2012 Jetta, Golf, Beetle, Passat and Rabbit models with the 2.5 CBTA-CBUA engine, the hose for the secondary air injection system can be contaminated by foreign particles. 2005-2012 Jetta, Golf, Beetle, Passat and Rabbit models with the 2.5L CBTA-CBUA engine.