Walker 256-1144 Engine Oil Pressure Switch

Engine Oil Pressure Switch for Audi and Volkswagen

Walker 256-1144 is an OE replacement engine oil pressure switch built to monitor lubrication pressure and send a warning signal when pressure drops below safe limits. It is designed for direct-fit service on select Audi and Volkswagen applications with a 1-pin gray connector, including Audi Q5, Audi A6 Quattro, and Volkswagen Passat.

Key Features

• OE replacement engine oil pressure switch for factory-style pressure monitoring
• Matches OE specifications for pressure threshold, thread size, terminal type, and electrical response
• 1-pin gray connector with blade pin terminal design
• Metal and plastic construction with oil-resistant, high-temperature materials
• Direct-fit replacement for factory mounting locations on the engine block or oil filter housing
• Walker 256-1144 for Audi Q7, Audi A7 Quattro, Volkswagen Atlas, and other listed applications

Detailed Description

Walker 256-1144 is engineered to restore accurate oil pressure signaling in vehicles that rely on a single-signal pressure switch. It threads into the original location and connects to the existing wiring without modification, making it a practical replacement for service work, drivability repairs, or engine rebuilds. This part number is used across a wide range of fitments, including 2009-2017 Audi Q5, 2012-2018 Volkswagen Passat, and 2018-2023 Volkswagen Atlas. The switch is built to maintain consistent electrical response under engine heat and oil exposure, helping preserve the warning function of the lubrication system.

Common Issues This Part May Address

• Oil warning light flickering or intermittent operation
• False low-oil-pressure warnings on the dash
• No warning signal when actual oil pressure drops
• Faulty or inconsistent oil pressure switch output
• Electrical signal loss at the factory pressure switch connection

Installation Notes and Tips

Verify the connector style, terminal count, and gray 1-pin configuration before installation. Confirm the vehicle’s engine code and build date where noted in fitment, especially on 2016 Audi applications with date-specific coverage. Inspect the sealing surface and wiring connector for damage before threading the switch into the original port. This part number, 256-1144, is listed for multiple Audi and Volkswagen models, so matching the exact application is important for proper operation.

Quality Assurance

Walker Products manufactures this oil pressure switch to OE replacement standards using materials selected for heat and oil resistance. The design follows factory-style specifications for fit and electrical function to support reliable pressure monitoring in Audi and Volkswagen engines.