Fitment
Compatible with Volkswagen Group Euro 5 / Euro 6 diesel emission systems (SCR / AdBlue depending on engine variant)

Vehicle applications include:
Volkswagen Sharan
Seat Alhambra
Volkswagen Passat
Other VW Group diesel vehicles using OEM part numbers 03L907807R / 03L907807AE / 5WK96737

FAQ

Q1: What is the function of this NOx sensor?
A1: It measures nitrogen oxide levels in diesel exhaust and sends data to the SCR system to control AdBlue (DEF) injection and reduce emissions.

Q2: Are 03L907807R and 03L907807AE the same?
A2: 03L907807AE is the updated replacement for 03L907807R in many catalogs, but exact compatibility depends on engine code and connector type.

Q3: Where is this sensor installed?
A3: It is installed in the exhaust aftertreatment system, typically on SCR inlet or outlet depending on vehicle configuration.

Q4: Is this used only for Sharan and Alhambra?
A4: It is primarily used on VW Sharan and Seat Alhambra 2.0 TDI SCR systems, but can also appear in some Passat diesel applications.

Q5: What are common failure symptoms?
A5: Engine warning light, AdBlue/SCR faults, NOx signal errors, or limp mode.