Fitment
Compatible with Volkswagen Group Euro 6 diesel emission systems (SCR / AdBlue)

Vehicle applications include:
Volkswagen Passat
Skoda Superb
Volkswagen Caddy
Other VW Group diesel vehicles using OEM part numbers 04L907807EB / 04L907805N / 04L907805AT / 04L907805D

FAQ

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

Q2: Where is this sensor installed?
A2: It is installed in the exhaust aftertreatment system, typically upstream or downstream of the SCR catalyst depending on configuration.

Q3: Are these part numbers interchangeable?
A3: These are closely related OEM variants in the same sensor family, but exact matching is still required due to calibration differences.

Q4: Is this used across multiple VW platforms?
A4: Yes, it is commonly used in MQB/MLB diesel platforms such as Passat B8, Skoda Superb, and Caddy 2.0 TDI SCR systems.

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