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

Based on Ford OEM revision data and verified SCR catalog cross-references, part number K2GA-5E145-AC (SNS705A family) is used in Ford Euro 6 diesel SCR (AdBlue) systems, mainly on 2.0 EcoBlue diesel engines (Ford CD/CE/DFK platforms).

Confirmed applications include:

• Ford S-MAX Mk2 (2018–2023) 2.0 EcoBlue Diesel
• Ford Galaxy Mk4 (2018–2023) 2.0 EcoBlue Diesel
• Ford Mondeo Mk5 facelift 2.0 EcoBlue Diesel
• Ford Kuga III 2.0 EcoBlue Diesel (selected SCR variants)
• Some Ford Transit / commercial SCR variants (platform dependent)

Fitment is strictly based on OE number family matching:
K2GA-5E145-AC / SNS705A / Bosch 0281006790 / 0281008765 (family variants)

Verified Cross-Reference (Important)

• Bosch confirms 0281006790 / 0281008765 are NOx sensors used in Ford Euro 6 SCR systems linked to K2GA-5E145-AC revision family
• Aftermarket EPC listings confirm K2GA-5E145-AC interchangeable revision within the K2GA SCR NOx sensor family used on Ford S-MAX / Galaxy / Mondeo 2.0 EcoBlue
• Ford OE numbering shows K2GA-5E145-AB → AC → AD → AE series are revision updates within same SCR sensor architecture

📌 Key point:
K2GA-5E145-AC is a revision update of K2GA-5E145-AB, meaning it belongs to the same SCR NOx sensor system but with updated calibration/software.

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 SNS705A/K2GA-AC module is typically used as:

• Downstream SCR NOx sensor (post-catalyst monitoring)
• SCR efficiency feedback sensor
• AdBlue dosing control reference sensor

Symptoms / Fault Codes

• Check engine light
• SCR / AdBlue system warning
• NOx sensor communication fault
• P2200 / P229F / P20EE type codes (Ford-specific variants possible)
• Reduced engine power (limp mode)
• Incorrect AdBlue consumption

OE / Part Numbers

• K2GA-5E145-AC
• K2GA-5E145-AB (earlier revision)
• SNS705A
• Bosch 0281006790 / 0281008765 family
• Ford EcoBlue SCR NOx sensor family (2.0 diesel platform group)

FAQ

Is AC interchangeable with AB version?

Yes in most cases — AC is a revised version of AB, but ECU coding must still match vehicle software level.

Why do S-MAX, Galaxy, and Mondeo share this sensor?

Because they all use the same Ford 2.0 EcoBlue Euro 6 SCR diesel architecture, so emission components are shared.

Is this inlet or outlet sensor?

Most applications use this as a post-SCR (outlet) NOx sensor, but exact position depends on exhaust layout and calibration.