Vauxhall Mokka Oxygen Sensor Replacement Parts

Yes, but only on petrol-engined Mokkas — the 1.4 turbo and 1.6 petrol variants use oxygen sensors (lambda sensors) in the exhaust system to manage fuelling and emissions. Diesel Mokkas do not use a traditional oxygen sensor in the same way; they use other emissions management sensors instead, so if you have a diesel Mokka you are likely looking for something different such as an NOx sensor or exhaust temperature sensor. Check your fuel type before ordering.

This crosses a significant boundary — the original Mokka (2012–2016) became the Mokka X from 2016 onwards, and engine calibrations and emissions requirements shifted across that change. Both generations used the 1.4 turbo petrol, but the sensor specification, wiring connector, and ECU mapping may differ between Euro 5 and Euro 6 variants either side of that 2016 boundary. Name the boundary to your breaker and ask them to confirm against your exact registration and engine code before buying.

No, trim level does not affect which oxygen sensor is fitted — it is determined entirely by engine code, fuel type, and the emissions standard the car was built to. An SE and an Elite on the same 1.4 turbo petrol engine from the same year will use the same sensor. Trim differences on the Mokka are cosmetic — interior and exterior spec — and have no bearing on the exhaust or engine management system.

For petrol Mokkas the most common engine is the A14NET (1.4 turbo), and matching the engine code is the single most important thing you can do to get the right sensor. The oxygen sensor position also matters — pre-cat (upstream) and post-cat (downstream) sensors are different parts — so tell the breaker which position you need as well as your engine code. Your engine code is stamped on the block and shown on your V5C.

A typical petrol Mokka will have two oxygen sensors — one upstream (before the catalytic converter) and one downstream (after it), and they are not interchangeable with each other. The upstream sensor monitors the air-fuel mixture going into the cat, while the downstream one monitors converter efficiency, and they can have different part numbers even on the same engine. Always tell the breaker which position is faulty, ideally referencing the fault code from your diagnostic scan.

The year matters because the Mokka moved from Euro 5 emissions compliance to Euro 6 around the 2016 Mokka-to-Mokka-X transition, and a sensor calibrated for one emissions era may not perform correctly — or may cause an MOT failure — if fitted to a car from the other era. Stick to a sensor from a car sharing your engine code and broadly the same emissions generation, and confirm the exact match with the breaker against your registration number. A visually similar sensor from the wrong era is a false economy.