Bosch 0261231019 Ignition Knock (Detonation) Sensor

Bosch Knock Sensor for Engine Protection

Bosch Ignition Knock (Detonation) Sensor 0261231019 is an OE-quality replacement built to monitor engine knock and support stable combustion control. For a 1991 Audi 200 Quattro, this sensor helps the engine management system detect detonation early so timing can be adjusted before damage occurs.

Key Features

• Bosch OE-quality knock sensor for ignition knock detection
• Supports engine protection by helping the ECU respond to detonation
• Helps reduce fuel consumption by maintaining proper ignition timing control
• Direct-fit application for 1991 Audi 200 Quattro, N/A
• Part number 0261231019 for accurate ordering and service matching

Product Details

The Bosch Ignition Knock (Detonation) Sensor, part number 0261231019, is part of Bosch’s OE-quality sensor line for emission and engine management systems. It is engineered to provide reliable knock detection so the vehicle’s control system can manage spark timing more precisely. This helps protect the engine under load and supports efficient operation in the 1991 Audi 200 Quattro. This part cross-references 077905377 for the same application.

Common Issues This Sensor May Address

• Knock or pinging under acceleration
• Check engine light related to knock sensor signal faults
• Reduced engine performance caused by incorrect ignition timing
• Unstable fuel economy from poor detonation feedback
• Engine protection concerns when the original sensor is worn or failing

Installation Notes and Tips

Verify the connector style and mounting location against the original sensor before installation. On the 1991 Audi 200 Quattro, use the vehicle’s service information to confirm proper torque and routing, since knock sensor performance depends on secure mounting and clean contact with the engine. After installation, clear any stored fault codes and confirm normal sensor operation with a scan tool.

Quality Assurance

Bosch supplies OE-quality engine management components, and this knock sensor is built to meet the demands of factory-style detonation monitoring. Use part number 0261231019 to confirm the correct replacement for your application.