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files/12_c0546382-2e5b-4153-b648-0b95ec57c5a0.jpg
Fitment
Chevrolet / GMC diesel vehicles with SCR AdBlue emission system including
- Chevrolet Cruze 2.0L Diesel (2014–2015)
- Chevrolet Orlando 2.0L Diesel (selected markets)
- Opel / Vauxhall diesel SCR platforms (selected GM applications)
- GM light diesel Euro 5 / Euro 6 SCR systems (regional variants)
OE reference
12641556
5WK96735
12662658 (interchange variant)
A2C15799000-01 (cross reference in some catalogs)
FAQ
What is this NOx sensor used for
It measures nitrogen oxide levels in diesel exhaust gas and sends data to ECU for SCR AdBlue emission control system
Is this inlet or outlet sensor
It is commonly used as NOx Position 1 (upstream) sensor depending on SCR system layout
Are 12641556 and 12662658 interchangeable
Yes, they are often cross-referenced depending on calibration and vehicle application, but ECU matching is still required
What system does it work with
SCR Selective Catalytic Reduction system using AdBlue injection for diesel emission compliance
What are common failure symptoms
Engine warning light SCR AdBlue fault reduced power limp mode NOx sensor communication error emission efficiency faults
Fitment
Chevrolet / GMC diesel vehicles with SCR AdBlue emission system including
- Chevrolet Cruze 2.0L Diesel (2014–2015)
- Chevrolet Orlando 2.0L Diesel (selected markets)
- Opel / Vauxhall diesel SCR platforms (selected GM applications)
- GM light diesel Euro 5 / Euro 6 SCR systems (regional variants)
OE reference
12641556
5WK96735
12662658 (interchange variant)
A2C15799000-01 (cross reference in some catalogs)
FAQ
What is this NOx sensor used for
It measures nitrogen oxide levels in diesel exhaust gas and sends data to ECU for SCR AdBlue emission control system
Is this inlet or outlet sensor
It is commonly used as NOx Position 1 (upstream) sensor depending on SCR system layout
Are 12641556 and 12662658 interchangeable
Yes, they are often cross-referenced depending on calibration and vehicle application, but ECU matching is still required
What system does it work with
SCR Selective Catalytic Reduction system using AdBlue injection for diesel emission compliance
What are common failure symptoms
Engine warning light SCR AdBlue fault reduced power limp mode NOx sensor communication error emission efficiency faults
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