Vauxhall Mokka Lambda Sensor Replacement Parts

Yes, but only on petrol-engined Mokkas — the lambda sensor (also called an oxygen or O2 sensor) monitors exhaust gases to help the ECU control the fuel-air mixture, and petrol engines rely on this system. Diesel Mokkas do not use a lambda sensor in the same way; if you have a diesel and are chasing an exhaust or emissions fault, you are more likely looking at a DPF sensor, NOx sensor, or EGR-related component. Check your V5 or registration plate on a data check to confirm whether your Mokka is petrol or diesel before ordering.

The Mokka ran from 2012 to 2016 as the first generation, with a facelift arriving around 2014, so a 2013 and a 2016 car sit either side of that facelift boundary. Engine codes and exhaust configurations can differ across the facelift even where the engine capacity looks the same on paper, so crossing that 2014 line is not straightforward — confirm the engine code on both donor and recipient vehicles with the breaker before buying. A lambda sensor that looks identical and plugs in may still have a different calibration or positioning that causes fault codes.

Trim level does not affect lambda sensor fitment on the Mokka — SE, Design, Tech Line, and Elite are all cosmetic and equipment packages that share the same engines and exhaust systems. What matters is the engine code, fuel type, and whether the car is pre- or post-facelift (2012–2014 vs 2014–2016). Give the breaker your full registration and engine code rather than your trim name.

The 1.4 turbo petrol Mokka typically has at least two lambda sensors: an upstream (pre-cat) sensor and a downstream (post-cat) sensor, and these are not interchangeable with each other even if they look similar. The upstream sensor is the primary one managing fuelling, while the downstream one monitors catalytic converter efficiency. When asking a breaker for a used sensor, specify upstream or downstream (NS/OS if the layout requires it) so you get the correct one for your fault code.

The Mokka B, launched in 2021 on the PSA platform, is a fundamentally different car from the original Mokka A (2012–2016) and shares no meaningful mechanical parts with it. The two generations use entirely different engines, ECUs, and exhaust systems, so lambda sensors from a Mokka A will not cross over. Always source a Mokka B sensor from a Mokka B donor car, and confirm the engine code with the breaker.

Some Vauxhall models from the same era share engine families — for example, the Astra J and Mokka both used versions of the 1.4 turbo petrol — and in some cases lambda sensors may be shared across those platforms. However, exhaust routing, sensor thread size, connector type, and emissions calibration can all differ even between models using the same engine code, so cross-model fitment is not something to assume. Put your registration and engine code to the breaker and let them confirm compatibility against their stock rather than going by engine size alone.