DDF Exhaust Pressure Sensor – Mercedes-Benz, Chrysler, Jeep & Dodge

This exhaust pressure sensor (also known as a DPF differential pressure sensor) for Mercedes, Chrysler, Jeep, and Dodge vehicles is a critical emissions control component that monitors the pressure of exhaust gases across the diesel particulate filter (DPF). This sensor measures the difference in exhaust backpressure before and after the filter and sends that information to the engine control unit (ECU), enabling accurate control of the DPF regeneration process and efficient emissions management. A properly functioning exhaust pressure sensor ensures correct soot buildup detection and helps maintain engine performance and compliance with emissions standards.

OEM Number: 56044587AA, 56044587AC, C587AC01, A6429050100, 56044587AB, 68078181AA, K05146187AC, K05146187AD

Number of Pins : 3 Pin

Connector From : 2,000 Pa To : 108,000 Pa

Exhaust System : for vehicles with factory fitted soot -/particulate filter

Number of connectors : 2

Diameter : 8 mm, 6 mm

Quantity : 1

Our SKU: TMA6429050100_94

All our Dpf Exhaust Pressure Sensor are OEM quality and reliable after market car parts. This Dpf Exhaust Pressure Sensor is specifically compatible with Chrysler: Grand Voyager, Dodge: Caliber, Nitro, Jeep: Compass, Liberty, Patriot, Wrangler, Lancia: Voyager, Mercedes-Benz: A-Class, B-Class, C-Class, CLC-Class, CLK, CLS, E-Class, G-Class, GL-Class, GLK-Class, M-Class, R-Class, S-Class, SLK, Sprinter 3-T, Sprinter 3.5-T, Sprinter 4.6-T, Sprinter 5-T, Viano, Vito, Vito / Mixto, Smart: Forfour, Fortwo, .

Please use our make-model-year tool to check this part's compatibility with your vehicle. However, please note that our tool is for reference only and we recommend that you check the part number on your old unit prior to purchasing.

If you are still not sure about the compatibility of this part to your vehicle, please supply us with the VIN number or Reg number in our live chat or contact form! You can also find details on our purchasing & shipping guide here.

Key Benefits

Accurate Exhaust Backpressure Monitoring
Designed to detect pressure differences in the exhaust system, this sensor provides essential feedback to the ECU to determine DPF loading and initiate regeneration at the correct time.

Supports Emission Control Systems
By enabling timely regeneration of the diesel particulate filter, this sensor helps reduce harmful soot emissions and supports compliance with emissions regulations. 

Prevents DPF Clogging and Engine Issues
A failing pressure sensor can lead to incorrect regeneration timing, which increases soot accumulation and the risk of DPF blockage, reduced performance, or emissions-related fault codes.

Direct Replacement Part
This exhaust pressure sensor is designed to match common OEM reference numbers used across Mercedes, Chrysler, Jeep, and Dodge applications, allowing straightforward installation without modification when the correct reference is selected.

Improves Vehicle Reliability and Performance
Replacing a worn or faulty exhaust pressure sensor can help restore proper exhaust flow measurements, reduce check engine lights related to DPF faults, and improve fuel economy and engine responsiveness.

Frequently Asked Questions (FAQs)

Q: What does an exhaust pressure sensor do?
An exhaust pressure sensor measures the difference in pressure between two points in the exhaust system, often before and after the diesel particulate filter (DPF). This differential pressure data allows the engine control unit (ECU) to monitor soot accumulation and control the DPF regeneration process. 

Q: What are the common symptoms of a failing sensor?
Typical signs include increased diesel smoke (soot), reduced engine performance, check engine light illumination, poor fuel economy, and difficulty in completing DPF regeneration cycles.

Q: Why is replacing the exhaust pressure sensor important?
A faulty sensor can cause incorrect pressure readings, leading to poor DPF regeneration, soot buildup, and potential damage to the particulate filter, turbo, or engine. Replacing the sensor helps ensure accurate backpressure monitoring and emissions control.

Q: Is this a direct replacement part?
Yes. When the correct OEM reference number is selected for your vehicle, this exhaust pressure sensor installs as a direct replacement and reconnects to the vehicle’s pressure hoses and wiring without modification.

Q: Can I install this myself?
Sensor installation typically involves accessing the exhaust pressure lines and electrical connector in the engine bay. While some experienced DIYers may handle this, professional installation is recommended to ensure correct fitment and to diagnose related issues with the DPF system.