What is the construction and purpose of lambda sensors and O2 sensors?

Lambda sensors and O2 sensors are measuring elements mounted in the exhaust system, most often in the manifold, exhaust pipe, or near the catalytic converter. A typical sensor consists of a body with a thread, a measuring part, a cable, and an electrical connector. Their purpose is to read the oxygen content in exhaust gases and transmit data to the engine control unit. Depending on the version, they can operate as control or diagnostic sensors.

What are lambda sensors and O2 sensors used for?

Lambda sensors and O2 sensors are used to control exhaust gas composition and correct the air-fuel mixture. Thanks to them, the control unit can maintain proper combustion, reduce fuel consumption, and support the effective operation of the catalytic converter. Their operation also affects idle stability and engine response to load. Incorrect readings can cause emission errors, poorer dynamics, and problems with exhaust system diagnostics.

What role does the lambda sensor socket play?

The lambda sensor socket is a threaded mounting point made in an exhaust system component. It serves to stably seat the sensor in a place where exhaust flow allows for accurate oxygen content measurement. Its condition is important for connection tightness, proper tightening, and the safety of the sensor cable. A damaged thread or improper cable positioning can hinder installation and subsequent service.

How to choose the right lambda sensor for a specific car?

It is best to compare the OEM part number, interchangeable numbers, fuel type, and mounting location before or after the catalytic converter. It is also worth checking the plug type, number of wires, and compatibility with the engine version. If the car has several equipment variants, verification by VIN will be helpful.

What symptoms indicate a problem with a lambda sensor or O2 sensor?

Most often, rough engine operation, higher fuel consumption, poorer throttle response, and a "check engine" light appear. There may also be an increase in exhaust emissions and errors related to mixture correction or catalytic converter efficiency. Symptoms should be confirmed by computer diagnostics and live parameter monitoring.

What should be paid attention to when installing a used lambda sensor?

Before installation, you must check the condition of the thread, cable, shield, and electrical connector. It is also important to route the harness correctly away from very hot components and match the part to the specific mounting position. If necessary, it is also worth checking the cooperating exhaust system gaskets: tightness and engine efficiency.

Lambda probes and O2 sensors

At Global Parts, we offer a wide selection of original used car parts, including lambda sensors and O2 sensors for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. Our lambda sensors and O2 sensors undergo quality control to ensure you receive a top-quality product.

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Audi A4 B9 Q5 FY A6 C8 A7 C8 Exhaust Gas Pressure Sensor 2.0 TDI 05L906051A

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Mercedes A238 M276 Petrol Exhaust Lambda Probe Oxygen Sensor A0005421600

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Audi Volkswagen Seat Skoda Exhaust Gas Temperature Sensor 03L906088BH

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BMW E36 E38 E39 Lambda Sensor Probe 580MM M52 M54 M62 M73 Petrol Engine 1742051

€23.95

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Audi A4 B8 A5 8T Exhaust Lambda Probe Oxygen Sensor 3.0 TFSI 06E906265AE

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Land Rover Discovery L550 Lambda Probe Oxygen Sensor 2.0 Diesel GJ32-9D375-AE

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€61.95

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BMW X5 E70 Petrol Engine Exhaust Lambda Oxygen Sensor Probe 7558179

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Volkswagen Caddy Maxi 2k Exhaust Gas Temperature Sensor 2.0 TDI 04L906088EK

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Volkswagen Golf 1K Exhaust Lambda Sensor 06F906262AC

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€70.95

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Exhaust Pressure Sensor Mercedes W177 W246 M260 Petrol DPF A0009057809

€23.95

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€23.95

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BMW F01 F02 F10 F11 F80 M3 F82 F83 M4 Holder Bracket Lambda Probe 7853964

€23.95

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Ford Transit Mk8 Exhaust Gas Temperature Sensor BK3A-12B591-AC

€75.95

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Mercedes W204 C207 W212 Lambda Probe Oxygen Sensor M271 Petrol A0035428518

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Volkswagen Crafter 2E Lambda Oxygen NOx Sensor Module 2.0 TDI 03L907807T

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Citroen Relay Peugeot Boxer Exhaust Gas Temperature Sensor 2.2 HDI 9814103480

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Audi Q2 GA Lambda Oxygen Exhaust Sensor Probe Cable 05E906262H

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BMW E60 E63 E64 E65 450MM Sensor Lambda Probe Grey Petrol 7512002

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€142.95

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Lambda Probe Bracket BMW F10 LCI G20 G21 G30 Oxygen Sensor Mount Holder 8570829

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Mercedes C205 Diesel Exhaust Gas Temperature Sensor EGT A0009059705

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BMW X5 F15 Exhaust Oxygen Lambda Sensor Wiring L=600 25d 25dX B47 8579129

€94.95

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Audi A4 B9 A5 S5 F5 Exhaust Gas Temperature Sensor 2.0 TDI DETA 8W0906088B

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€23.95

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Audi A6 C8 Q7 4M DPF Exhaust Pressure Sensor Unit Diesel 3.0 TDI 059906051L

€32.95

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Mercedes W204 W212 Diesel Lambda Sensor Oxygen Probe A0065424918

€23.95

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€23.95

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€23.95

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€23.95

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Land Rover Range Rover Velar L560 Exhaust Gas Temperature Sensor MX73-12B591-CA

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Audi A5 8T Exhaust Gas Temperature Sensor 04L906088DR

€47.95

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Audi A6 C7 A7 4G Exhaust Gas Temperature Sensor 3.0 TDI CVUA 4G0906088Q

€32.95

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Mercedes W176 W447 Exhaust Pressure Sensor DPF OM626 Diesel 227701177R

€56.95

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Audi A6 C7 A7 4G Exhaust Gas Temperature Sensor 3.0 TDI CVUA 4G0906088AF

€37.95

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Audi Q3 Exhaust Lambda NOx Oxygen Sensor 2.0 TFSI CULB Petrol 06K906262

€23.95

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Audi TT 8N 3.2 VR6 Quattro Lambda Probe Sensor Post Catalyst Cyl 4-6 022906265C

€56.95

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Fiat Ducato Mk3 Exhaust Gas EGR Pressure Sensor Unit 2.2 Diesel 55241075

€23.95

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Audi Q3 F3 Oxygen NOX Sensor Module Control Unit 2.0 TDI 05L907807AF

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Mercedes Sprinter W906 OM651 Diesel Gas Exhaust Temperature Sensor A0009059205

€32.95

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VW Volkswagen Tiguan 5n Exhaust Temperature Sensor Sender DFHA 04L906088EM

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Lambda Sensor Peugeot 3008 Citroen DS4 C4 Oxygen Probe 9683265480

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Porsche Cayenne 9PA Lambda Oxygen Sensor 3.2 Petrol Unit 7L5906262A

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€23.95

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BMW 5 6 7 Series E60 E61 E64 E65 450MM Sensor Lambda Probe Grey Petrol 7539126

€23.95

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Volkswagen Tiguan 5N Exhaust Gas Temperature Sensor DFGA DFHA DFGC 04L906088CC

€23.95

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VW Amarok Mk2 Exhaust Gas Temperature Lambda Sensor 3.0 TDI MB3G-12B591-DB

€99.95

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Volkswagen Tiguan 5N Exhaust Oxygen Lambda Probe D Sensor 2.0 Diesel 04L906262M

€23.95

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NOX Sensor Mercedes W205 W213 W906 W247 Lambda Oxygen Probe A0009057803

€123.95

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€75.95

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Land Rover Range Rover Velar L560 Lambda Oxygen Sensor 2.0 Diesel MX73-5J299-AB

€275.95

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Jaguar XE X760 Lambda Oxygen Sensor FPLA-9D375-AB

€23.95

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VW Volkswagen Tiguan 5n Exhaust Temperature Sensor 2.0 TDI 04L906088DN

€23.95

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Audi A3 8V Lambda Oxygen NOX Sensor 04L906262A

€23.95

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Porsche Cayenne 9PA Lambda Oxygen Sensor 3.2 Petrol Unit 95560612810

€28.95

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Ford Mondeo MK4 S-MAX Galaxy MK3 Exhaust Gas Temperature Sensor AG9112B591BB

€23.95

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Ford Kuga C520 Lambda Probe Oxygen Sensor 1.5 EcoBoost Petrol F1FA-9G444-JA

€28.95

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Mercedes R172 Gas Exhaust Temperature Sensor A0009059405

€113.95

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Range Rover Sport L494 Lambda Oxygen Sensor 3.0 Diesel Engine LK62-9D375-AA

€70.95

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Volkswagen Touareg 3.0 TDI Diesel Line Lambda Probe Oxygen Sensor 059906262J

€23.95

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Mercedes W204 W212 Lambda Sensor Exhaust Probe Left N/S M276 Petrol A0085427018

€23.95

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BMW 1 2 3 Series E20 F21 F22 F30 LCI Exhaust Temperature Sensor 8570232

€23.95

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