At DDP AutoParts, we offer a high-performance NOx (nitrogen-oxide) sensor for your Volvo XC40 2.0 D3 AWD (2017–2021) — compatible with OEM part numbers 32203674, 8888784990, and Bosch 0281007407. This sensor is critical for your vehicle’s SCR (Selective Catalytic Reduction) system, as it monitors NOx levels in the exhaust and feeds data back to the engine control unit to help regulate emissions. A faulty NOx sensor can trigger warning lights, degrade engine performance, or result in failed emissions checks. Our unit meets or exceeds the factory specification, delivering reliable measurements, long-term durability, and peace of mind for emissions compliance.

OEM Number: 0281008640, 14634589RMP, 8888784990, 32203674, 0281007407, 0281007408, 0281008641

Fitting Position : before catalytic converter

Number of pins : 5-pin connector

Number of circuits : 6

Thread Size : M20*1.5

Connector Shape : oval

Cable Length : 685 mm

Quantity : 1

Our SKU: TV32203674_94

All our Nox Sensor For Volvo Xc40 536 D3 Awd 2.0D 2017-21 32203674 8888784990 0281007407 are OEM quality and reliable after market car parts. This Nox Sensor For Volvo Xc40 536 D3 Awd 2.0D 2017-21 32203674 8888784990 0281007407 is specifically compatible with Volvo: XC40, .

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.

❓ Frequently Asked Questions 

1. Why is this NOx sensor important for my Volvo XC40?
   The NOx sensor measures nitrogen-oxide levels in the exhaust and communicates with the SCR system. This helps your car manage emissions efficiently, maintain performance, and stay compliant with emissions regulations.

2. Is this the OEM Volvo part or an aftermarket equivalent?
   This is a high-quality aftermarket replacement designed to match OEM specifications (32203674 / 8888784990 / 0281007407). While it’s not manufactured by Volvo, it delivers equivalent functionality and reliability, and is a more cost-effective option than a genuine OEM part.

3. What are the common symptoms of a failing NOx sensor?

   • Check Engine Light related to NOx / SCR faults.

   • Reduced performance or derating during driving.

   • Fault codes such as “sensor circuit intermittent” or “heater control circuit” (common on diesel SCR systems).

   • Increased urea (AdBlue) consumption or failure in the aftertreatment system.

4. Where is this sensor located, and how hard is it to replace?
   The NOx sensor is typically placed after the catalytic / SCR converter in the exhaust system. Replacing it requires some underbody access, and care must be taken with wiring and the exhaust pipe to avoid damage. It's recommended that a qualified mechanic performs the replacement unless you're confident working under the vehicle.

5. Do I need to reset anything after installing a new NOx sensor?
   Yes — after fitting the new sensor, you should clear any existing fault codes via a diagnostic tool (e.g. OBD‑II). Once the system runs again, the ECU should correctly interpret the new sensor’s readings. If old codes persist, double-check the installation and wiring.

6. What causes a NOx sensor to fail?
   Common failure modes include:

   • Contamination from soot or unburnt fuel — particularly in diesel engines.

   • Internal failure or degradation of the sensing element.

   • Corrosion of wiring or connectors due to heat, moisture, or road salt.

7. Will replacing the NOx sensor fix emissions faults or SCR issues?
   Often, yes — a faulty NOx sensor can cause SCR system faults or emissions warnings. Installing a properly working sensor usually resolves issues where the sensor was the root cause. However, if there are problems upstream (e.g. SCR catalyst damage), additional diagnostics may be needed.

8. Do you provide a warranty or after-sales support?
   Absolutely. At DDP AutoParts, we offer our standard parts warranty on this NOx sensor. If you experience any issues after installation, just contact our support team — we’ll help with troubleshooting, replacements, or returns as needed.

9. Why choose DDP AutoParts for this sensor instead of OEM?

   • Cost savings: You pay significantly less than the OEM Volvo part.

   • Quality assurance: Our sensors are sourced to meet or closely match original performance.

   • Knowledgeable support: We can advise on fitment, installation, and fault-code clearance.

   • Stock availability: We make sure to keep emission-critical parts like NOx sensors available so you don’t wait weeks.