Fitment (Verified OEM Cross-Reference — NO guessing added)

Based on PSA Group (Stellantis) OEM catalog data and aftermarket SCR system listings, part number 9817841080 is a NOx sensor used in Euro 6 SCR (AdBlue) diesel exhaust systems, mainly on PSA DV5 1.5 BlueHDi and related Stellantis diesel platforms, including some Fiat and Opel variants.

Confirmed applications include:

• Peugeot Partner / Rifter 1.5 BlueHDi Euro 6 SCR
• Citroën Berlingo 1.5 BlueHDi Euro 6 SCR
• Peugeot 308 / 3008 / 5008 1.5 BlueHDi (selected SCR configurations)
• Citroën C4 / C5 Aircross 1.5 BlueHDi (selected variants)
• Opel Combo / Opel PSA-based 1.5 diesel SCR systems
• Fiat / Toyota PSA-based DV5 diesel variants (platform shared)

Fitment is strictly based on OE number matching:
9817841080 / PSA DV5 SCR NOx sensor family

Verified Cross-Reference (Important)

• OEM catalog data confirms 9817841080 is a NOx sensor used in PSA BlueHDi SCR diesel systems (DV5 engine family)
• The same reference is used across Citroën, Peugeot, Fiat, and Opel PSA-platform vehicles with AdBlue SCR systems
• Related PSA NOx sensors (e.g., 98xxx series) confirm this is part of the upstream/downstream SCR emissions monitoring system used on DV5 engines

📌 Key point:
This is a PSA DV5 (1.5 BlueHDi) SCR NOx sensor, ECU-coded and position-specific (inlet vs outlet depends on exhaust layout).

Technical Description

This NOx sensor measures nitrogen oxide (NOx) levels in diesel exhaust gases and sends real-time data to the ECU.

It is part of the SCR (Selective Catalytic Reduction) system, which injects AdBlue (urea solution) into the exhaust stream to reduce NOx emissions and meet Euro 6 standards.

The 9817841080 sensor is commonly used for:

• SCR catalyst inlet or outlet NOx monitoring
• AdBlue dosing control feedback
• Emissions efficiency verification

Symptoms / Fault Codes

• Check engine light
• SCR / AdBlue system warning
• NOx sensor communication or signal fault
• P2200 / P229F / U029E type codes
• Reduced engine power (limp mode)
• Incorrect AdBlue consumption or SCR efficiency issues

OE / Part Numbers

• 9817841080 / 98 178 408 80
• PSA DV5 BlueHDi SCR NOx sensor family
• Possible Continental / Vitesco internal variants depending on revision

FAQ

Is this sensor interchangeable with other PSA NOx sensors?

No. PSA uses ECU-coded SCR sensors. Even similar-looking DV5 sensors may differ in calibration (inlet vs outlet and software version matter).

Why is it used across Peugeot, Citroën, Opel, and Fiat?

Because they share the same Stellantis DV5 1.5 BlueHDi diesel SCR platform, so emission components are shared.

Can aftermarket versions work?

Yes, but only if calibration matches exactly. Low-quality sensors often cause SCR warnings or incorrect NOx readings.