Basic Positioning This solenoid valve is a core component of the Volkswagen Group’s intake manifold switching system. It controls the opening and closing of the intake manifold flap via vacuum drive, optimizing the engine’s air intake efficiency at different speeds to enhance power output and fuel economy.
2. Application Scope
1) Vehicle Coverage Volkswagen: Passat B6 (2006-2010), Passat B7 (2011-2015), Golf MK5 GTI (2006-2009), Golf MK6 GTI (2010-2014), Tiguan Gen 1 (2009-2011), Tiguan Gen 2 (2012-2018), CC (2009-2017), etc.
Audi: A4 B8 (2008-2016), A5 B8 (2008-2012), Q5 8R (2008-2016), etc.
2) Engine Models 1.8T/2.0T TSI: Volkswagen EA888 Gen1/Gen2 (e.g., Volkswagen CAEB/CAED engines), Audi 2.0TFSI (e.g., Audi CAEB/CAED engines).
Note: Only compatible with intake manifold systems driven by mechanical vacuum pumps. The 3rd-generation EA888 (Gen3) and subsequent models are not applicable due to design changes.
3. Core Functions & Roles 1) Dynamic Air Intake Control Low speed (<3000 rpm): The flap closes to extend the air intake path, enhance airflow inertia, and increase torque output (e.g., more power during startup or uphill driving).
High speed (>3000 rpm): The flap opens to shorten the air intake path, reduce resistance, and improve maximum power (e.g., smoother performance during high-speed overtaking).
2) Practical Performance Optimization Power response: Improves insufficient low-speed torque, making acceleration more linear.
Fuel consumption: Reduces engine energy loss by precisely adjusting air intake volume.
Carbon deposit prevention: Stabilized airflow reduces the risk of carbon deposits in valves and manifolds (especially for the common issue of EA888 engines).
4. Fault Symptoms & Impacts 1) Common Symptoms Engine jitter, weak acceleration, and unstable idle speed.
Malfunction indicator light (MIL) illuminates (e.g., P2015 fault code for intake manifold position sensor).
Some models may be accompanied by P0491/P0492 fault codes (insufficient flow in the secondary air injection system...
