FITMENT:
Compatible with Freightliner and Detroit Diesel heavy-duty trucks equipped with SCR (AdBlue/DEF) systems, including:

• Freightliner Cascadia (2012–2022)
• Western Star trucks (select DD13/DD15/DD16 models)
• Detroit Diesel engines: DD13 / DD15 / DD16 (DDEC systems)
• Select Peterbilt / Kenworth / International applications using Detroit SCR systems

OEM / Cross reference numbers:

• A0101532228 / A0101532328
• 5WK96739A / 5WK9 6739A
• A2C89603300-02
• A0091530728

This NOx sensor is used in SCR aftertreatment systems to measure nitrogen oxide levels in exhaust gases and regulate AdBlue dosing for emissions compliance.

FUNCTION:

• Measures NOx concentration in diesel exhaust stream
• Sends data to ECU via CAN (J1939 communication)
• Controls SCR/AdBlue injection strategy
• Ensures EPA / Euro emissions compliance
• Helps prevent engine derate and SCR system faults

INSTALLATION POSITION:

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

IMPORTANT NOTE:
Detroit Diesel / Freightliner NOx sensors are part of a smart SCR sensor system, meaning:

• Same sensor family used across multiple OEM numbers
• Inlet and outlet sensors are NOT interchangeable
• ECU software calibration determines function
  Incorrect matching may cause SCR faults or limp mode.

FAQ:

Q1: Is this inlet or outlet sensor?
A1: It can be used as inlet or outlet depending on DD13/DD15/DD16 SCR configuration.

Q2: What vehicles does it fit?
A2: Freightliner Cascadia, Western Star, and Detroit Diesel DD13/DD15/DD16 engines.

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

Q4: Are 5WK96739A and A0101532228 the same?
A4: Yes, 5WK96739A is the Continental reference for OEM A0101532228 family.

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