FITMENT:
Compatible with Mercedes-Benz and Detroit Diesel SCR-equipped commercial vehicles, including:

• Mercedes-Benz Actros MP4 / MP5 (select Euro 6 configurations)
• Atego / Antos / Arocs (SCR diesel systems)
• Detroit Diesel DD13 / DD15 / DD16 engines (DDEC systems)
• Freightliner Cascadia (Detroit Diesel SCR variants)
• Western Star trucks (Detroit SCR applications)

OEM / Cross reference numbers:

• A0091530628 / A 009 153 06 28
• 5WK96656B / 5WK9 6656B
• EA0091530628 / DDE A0101532228 (related cross references)

This NOx sensor is part of the SCR exhaust aftertreatment system, used to monitor nitrogen oxide levels and control AdBlue (DEF) dosing for emissions compliance.

FUNCTION:

• Measures NOx concentration in diesel exhaust gas
• Sends real-time data to ECU via CAN (J1939 communication)
• Controls SCR/AdBlue injection strategy
• Monitors catalyst efficiency and emissions performance
• Ensures Euro 5 / Euro 6 / EPA emissions compliance

INSTALLATION POSITION:

• SCR system inlet or outlet sensor (depending on engine configuration)
• Mounted on exhaust line between DPF and SCR catalyst or after SCR system

IMPORTANT NOTE:
This sensor is widely used across Mercedes-Benz and Detroit Diesel platforms, but:

• “Inlet” and “outlet” versions are NOT interchangeable
• Different harness lengths and calibration versions exist
• ECU software defines correct operation (BSD communication system on Mercedes trucks)

Incorrect matching may trigger SCR faults, AdBlue errors, or engine derate.

FAQ:

Q1: What does BSD mean in this sensor listing?
A1: BSD refers to Mercedes-Benz internal communication / system integration naming used in some SCR NOx sensor variants.

Q2: What vehicles use it?
A2: Actros, Arocs, Antos, Atego, Freightliner Cascadia, and Detroit Diesel DD13/DD15/DD16 engines.

Q3: What are failure symptoms?
A3: SCR warning light, AdBlue system malfunction, engine derate, NOx sensor fault codes, limp mode.

Q4: Is 5WK96656B same as A0091530628?
A4: Yes, 5WK96656B is the Continental reference for Mercedes OEM A0091530628.

Q5: Does installation require programming?
A5: Some vehicles require SCR reset or ECU adaptation after replacement.