Second Hand Nissan Cabstar Lambda Sensor

The Nissan Cabstar is a light commercial truck that has been sold in the UK exclusively with diesel engines, and diesel engines do not use lambda (oxygen) sensors in the same way petrol engines do — a traditional lambda sensor is a petrol-engine component used to manage the air-fuel mixture for a catalytic converter. No variant of the Nissan Cabstar was ever fitted with a lambda sensor as standard, so this part simply does not exist on the vehicle. If your MOT or diagnostic is flagging an exhaust gas or emissions sensor fault, you are most likely looking for an EGR valve, a NOx sensor, or a DPF-related sensor — confirm the exact fault code with your garage before ordering any parts.

Some online listings use 'lambda sensor' loosely to describe any exhaust gas sensor, which can cause confusion on diesel vehicles like the Cabstar. What the Cabstar actually uses — depending on its emissions era — may include NOx sensors or exhaust temperature sensors associated with its DPF and EGR systems, none of which are true lambda sensors. If a listing describes a lambda sensor for the Cabstar, treat it with caution and ask the seller or breaker to confirm the exact part number and function against your vehicle's registration before purchasing.

On a petrol car, 'oxygen sensor' and 'lambda sensor' are the same thing, but on a diesel like the Cabstar neither term correctly describes what is fitted. Diesel combustion does not require closed-loop lambda control, so the Cabstar has no traditional oxygen or lambda sensor. Your garage likely means a NOx sensor, an exhaust gas temperature sensor, or a component related to the EGR or DPF system — ask them to read you the exact fault code or part description so you can search for the correct part when contacting a breaker.

Depending on the engine code and emissions standard of your particular Cabstar, the relevant sensors are likely to include exhaust gas temperature sensors, NOx sensors, and pressure differential sensors linked to the DPF — the later Euro 5 and Euro 6 era trucks tend to have more of these than earlier models. The EGR valve and its associated sensors are also common failure points on the Cabstar's diesel engines. When contacting a breaker, give them your registration number so they can match the correct engine code and emissions standard, as sensor specifications can vary between engine variants and model years.