Standard Ignition TS686 Engine Cylinder Head Temperature Sensor

Engine Cylinder Head Temperature Sensor for Audi

Standard Ignition TS686 is an engine cylinder head temperature sensor built for direct replacement on select Audi applications. It uses a bolt-on attachment method and a female oval connector with a single plug/socket interface for a straightforward OE-style connection.

Compatible With Audi Q7, Audi Q8, Audi A6 allroad, Audi A6 Quattro, Audi A7 Sportback, Audi A8 Quattro, Audi RS5, Audi RS5 Sportback, Audi RS7 Sportback, Audi S4, Audi S5, Audi S6, Audi S7, Audi S8, Audi SQ5, Audi SQ7, and Audi SQ8 applications. Standard Ignition TS686 is also cross-referenced to 06M919501 and TS7333 for the same application.

Key Features

• Engine cylinder head temperature sensor for emission control systems
• Bolt-on attachment method for secure mounting
• Female connector with one oval plug/socket connection
• Direct-fit replacement part for select Audi models
• Standard Ignition TS686 part number for catalog matching and service lookup

Detailed Description

Standard Ignition TS686 is an emission control sensor designed to monitor cylinder head temperature and provide the engine management system with accurate temperature input. That signal supports proper fuel and ignition strategy, emissions control operation, and temperature-related fault detection. This part is listed for 2018-2024 Audi coverage across performance and luxury models, including Audi Q7, Audi Q8, and Audi A6 Quattro applications, along with related S and RS variants.

The sensor features a bolt-on mounting style and a female oval connector with a single connection point, helping match the original electrical interface on the vehicle. When replacing a failing cylinder head temperature sensor, TS686 provides a service-ready option for Audi A6 allroad, Audi A7 Sportback, Audi S4, and Audi SQ7 applications where the original sensor has worn, drifted out of range, or triggered a diagnostic code.

What It Helps Address

• Temperature-related check engine lights
• Incorrect cylinder head temperature readings
• Hard starting or rough running tied to sensor input faults
• Emission control system faults caused by inaccurate temperature data
• Driveability issues related to engine management temperature strategy

Installation Notes and Tips

Verify connector shape, connector gender, and mounting style before installation. Confirm vehicle coverage by year and model, since TS686 is listed for specific Audi applications only. Inspect the connector terminals and wiring harness for corrosion, heat damage, or looseness before installing the new sensor. Clear diagnostic trouble codes and recheck live data after installation to confirm the repair.

Quality Assurance

Standard Ignition is a recognized aftermarket brand for engine management and electrical replacement parts. TS686 is cataloged as an OE-style replacement sensor for the listed Audi applications and is identified by the Standard Ignition TS686 part number for accurate fitment matching.