Audi Q7 4M Exhaust Pressure Sensor DPF Particulate Filter Sensor 4M0131552AL

The Audi Q7 4M DPF Exhaust Pressure Sensor is an exhaust system component responsible for precise pressure measurement before and/or after the diesel particulate filter. A correctly functioning exhaust pressure sensor is crucial for the proper operation of the DPF filter, regeneration strategies, and stable engine performance in the Audi Q7 4M generation.

Specifications and technical data

• SKU: 4M0131552AL
• Mark: Audi
• Condition: Used
• OEM Part Number: 4M0131552AL
• Substitutable numbers: 4M0131552AL, 4M0 131 552 AL, 4M0131205E, 4M0 131 205 E
• Category: Oxygen Sensors

Purpose and Function in the Exhaust System

The DPF Exhaust Pressure Sensor for Audi Q7 4M belongs to the category of Lambda Sensors and O2 Sensors, which are components responsible for monitoring exhaust parameters. Its task is to provide the engine control unit with accurate information about the pressure difference across the particulate filter, allowing for:

• monitoring the DPF filter's soot and ash fill level,
• correct initiation of filter regeneration procedures,
• maintaining stable combustion parameters and engine operation,
• reducing the risk of overheating or damage to the particulate filter.

Thanks to a correctly functioning exhaust pressure sensor, the control unit can continuously adjust fuel injection and exhaust system strategies, leading to predictable vehicle behavior and compliance with emission standards.

Benefits of Using an Original Audi Sensor

Choosing a component from the Audi OE group ensures compatibility with the factory installation and the engine control unit's software. The main advantages include:

• factory measurement characteristics – no need for parameter adaptation in the control unit,
• consistency with diagnostic logic – accurate readings in service testers and no false error codes,
• stable DPF system operation – reduced risk of limp mode and power loss,
• preservation of the original exhaust system architecture – no interference with the wiring harness or mounting points.

Using sensors with factory-equivalent parameters is particularly important in modern diesel engines, where the exhaust gas aftertreatment system is tightly integrated with the control software.

Product Characteristics and Condition

The offered DPF Exhaust Pressure Sensor for Audi Q7 4M is a used original part. Such components are often chosen as an economical alternative to new parts while maintaining factory specifications. A used sensor:

• maintains compatibility with the vehicle's electrical system,
• allows for reduced exhaust system repair costs,
• ensures compatibility with the factory engine control unit and its software.

Before installation, a standard post-installation diagnostic procedure is recommended to confirm proper cooperation with the DPF system and the absence of active errors in the control unit's memory.

Selection by OEM Number and Interchange Numbers

This sensor should primarily be selected based on its OEM part number and available interchange numbers, which minimizes the risk of incompatibility with specific Audi Q7 4M engine variants. In practice, this means the ability to:

• verify compatibility by VIN number in the manufacturer's catalog or with the seller,
• check compatibility with the currently installed sensor in the vehicle,
• seamless integration with the existing DPF system without modifications.

If you need a more detailed discussion on selecting used modules and sensors, you can find practical tips in the Global Parts guide: used automotive electronics – why choose proven ECU modules and second-hand sensors.

Other Audi Lambda Sensors and O2 Sensors

If you are completing your exhaust system or planning more extensive maintenance of the exhaust gas purification system, you can check the available Audi Lambda Sensors and O2 Sensors in our offer. Go to the Audi Lambda Sensors and O2 Sensors category to select other measurement components tailored to your model.