Second Hand Vauxhall Antara Oxygen Sensor

The Antara was sold in the UK in both petrol and diesel variants, and oxygen sensors (lambda sensors) are fitted to the petrol engines — specifically the 2.4-litre petrol — as these engines use a catalytic converter that relies on lambda feedback. The diesel variants (the 2.0 CDTi engines) do not use traditional oxygen sensors in the same way; diesels use NOx or exhaust gas sensors in some emissions configurations, but if you have a CDTi Antara, a conventional oxygen sensor is not what you need. If you're unsure which engine you have, check your V5C or the engine bay sticker before ordering.

The Vauxhall Antara ran from 2006 to 2015 as a single generation, but there was a facelift in 2010 that also brought running engine and emissions updates, so a pre-facelift (2006–2010) sensor and a post-facelift (2010–2015) sensor may not be the same part even if they look similar. The key detail is the exact engine code on your petrol unit — match that code between the donor car and your own before agreeing a purchase with the breaker. Never assume fitment across that 2010 boundary without confirming the engine codes are identical.

Trim level makes no difference to oxygen sensor fitment on the Antara — whether your car is an S, SE, Exclusiv, or Elite, the sensor is determined entirely by the engine code and model year, not the trim. The breaker may have sourced a sensor from a lower or higher trim car and it will be equally suitable, provided the engine code matches. Focus your conversation with the breaker on the engine code and year, not the trim name.

The Antara and Captiva share the same underlying platform and were sold alongside each other in the UK, so there is a reasonable chance that petrol-engine oxygen sensors cross over between the two. However, model year, market specification, and exact engine code all need to match, so you should confirm the engine code on both vehicles with the breaker before assuming the part will transfer. Do not rely on visual similarity alone, as connectors and calibration can differ.

A typical 2.4-litre petrol Antara runs two oxygen sensors: one upstream (pre-catalytic converter, on the nearside of the exhaust manifold area) and one downstream (post-cat) used to monitor converter efficiency. If you are getting a fault code it is worth identifying which position is flagging before approaching a breaker, as the two sensors are not interchangeable with each other even though they come from the same engine. Ask the breaker to confirm whether the sensor they have is the pre-cat or post-cat unit.

Diesel engines, including the 2.0 CDTi in the post-facelift 2010–2015 Antara, do not use conventional narrowband or wideband oxygen sensors as petrol engines do; however, later CDTi variants meeting stricter Euro 5 emissions standards may be fitted with NOx sensors or exhaust gas temperature sensors that can trigger similar warning lights. If your diagnostic code mentions an exhaust gas or lambda-style fault on a diesel, raise this specifically with the breaker and quote your exact engine code, as these sensors are very emissions-era-specific and confirm-with-breaker territory given the DPF and catalytic configurations involved.