Parts for your 2022 Toyota Land cruiser-Oxygen sensor

2022 Toyota Land Cruiser oxygen sensor: is it fitted and does it matter?

For Australia and New Zealand, the 2022 Toyota Land Cruiser 300 Series is sold with the 3.3‑litre twin‑turbo diesel (F33A‑FTV). Based on Toyota’s own technical literature for the J300 diesel (Toyota Repair Manual via TIS) and the Toyota Electronic Parts Catalogue (A/NZ market listings), this engine does not use a conventional exhaust oxygen (lambda) sensor. Instead, its emissions control is managed with a Diesel Particulate Filter (DPF) and Selective Catalytic Reduction (SCR/AdBlue) system monitored by other exhaust sensors. That lines up with the ADR 79 series emissions framework used in Australia (aligned to Euro standards), which does not require a zirconia oxygen sensor on compression‑ignition engines.

Why no O2 sensor on the diesel Land Cruiser? Unlike petrol engines that swing around stoichiometric air‑fuel ratios and rely on oxygen/air‑fuel (A/F) sensors for closed‑loop mixture control, modern diesels run very lean most of the time. Fuel delivery is metered precisely from airflow, boost and rail pressure data, while aftertreatment performance is verified by sensors tailored to DPF and SCR efficiency.

What does the 2022 LC300 diesel use instead? Toyota’s service information shows a stack of hardware doing the job an O2 sensor would do on a petrol:

• Two NOx sensors (upstream and downstream of the SCR) to confirm AdBlue dosing and catalyst efficiency.
• Multiple exhaust gas temperature (EGT) sensors for turbo protection and DPF regeneration control.
• DPF differential pressure sensor to track soot loading and trigger/regulate regens.
• MAF/MAP and other engine sensors to calculate fuelling without exhaust oxygen feedback.

Shoppers may still see “oxygen sensor” listings online for a 2022 Land Cruiser. Those typically refer to the petrol V35A‑FTS versions sold in other markets, which do use wideband A/F sensors upstream and O2 sensors downstream of the catalytic converters. For A/NZ diesel LC300 owners, an oxygen sensor isn’t a service item because it isn’t fitted, attention is better spent on AdBlue quality, DPF health, and keeping sensors and connectors clean during any exhaust work.

FAQs

Does a 2022 Land Cruiser 300 in Australia or New Zealand have an oxygen sensor?
No. Toyota’s J300 diesel Repair Manual and A/NZ Parts Catalogue list NOx, EGT and DPF pressure sensors but no oxygen (lambda) or A/F sensors for the 3.3‑litre twin‑turbo diesel.

Which sensors actually manage emissions on the 3.3L twin‑turbo diesel?
The system uses two NOx sensors (pre‑ and post‑SCR), several EGT sensors, and a DPF differential pressure sensor. Together with the AdBlue dosing module, they manage SCR efficiency and DPF regens, while the ECU meters fuel using MAF/MAP and rail pressure data.

Why do some parts sites list O2 sensors for a 2022 Land Cruiser?
They’re usually referencing the petrol 300 Series sold in other regions. Those engines run at stoichiometric mixtures and rely on wideband A/F and O2 sensors. The A/NZ diesel model is a different setup and doesn’t use them.