Second Hand Fiat Fullback Lambda Sensor

The Fiat Fullback is a diesel-only pickup truck sold in the UK, using a 2.4-litre diesel engine, and diesel engines of this type do not use a lambda sensor in the way a petrol engine does. Diesel exhaust systems use NOx sensors and other emissions management components rather than a traditional lambda (oxygen) sensor, so if you are searching for a lambda sensor you may be looking for the wrong part. What you may actually need is a NOx sensor, an exhaust gas temperature sensor, or a component related to the DPF or SCR system — confirm your exact fault code with a breaker or specialist who can identify the correct sensor for your registration.

Some breakers and parts databases do loosely list diesel exhaust sensors under 'lambda sensor,' so it is worth calling and describing your fault code rather than relying on the part name alone. The Fullback uses emissions control sensors as part of its diesel aftertreatment system, and the correct part will depend on your engine and emissions specification. Give the breaker your registration and the specific fault code and they can identify whether they have the right component from a donor vehicle.

Trim level does not affect which exhaust sensors are fitted to the Fullback — what matters is the engine code and the emissions specification of the vehicle. All UK Fullbacks share the same 2.4-litre diesel engine, so the relevant variables are the emissions era and any differences in the after-treatment system, not whether the vehicle is an LX or SX. Confirm your registration with the breaker so they can match against the correct donor vehicle spec rather than trim name.

The Fiat Fullback was sold in the UK from approximately 2016 to 2019 and is based on the Mitsubishi L200 fourth generation platform, with a relatively short and consistent production run in this market. That said, emissions specification updates can mean sensors from different points in the production run may not interchange directly, and this is particularly true of anything connected to the DPF or SCR system. Name your registration to the breaker and ask them to cross-reference the donor vehicle's build date and emissions spec before agreeing a sale.

The Fiat Fullback is mechanically derived from the Mitsubishi L200 and shares significant underpinnings, so there is a reasonable chance that certain sensors are shared — however, this is strong confirm-with-breaker territory rather than something to assume. Emissions-related sensors in particular need to match the exact engine and aftertreatment configuration, and any mismatch could cause ongoing fault codes or an MOT failure. Ask the breaker to compare part numbers against your specific registration before purchasing.