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Lambdapower - Lambda Oxygen sensors in the UK to trade and DIY international and special orders

UPDATED 13 October 2020

Lambdapower has moved premises to increase space available to new projects. Our old postal address is now invalid, please use the new address on the contact page. Thankyou to all our customers for their patience during our premises move.

Our old mobile number is available again, 07806 705407
The old landline number is active but may not be answered, we are awaiting BT to connect this number to our broadband connection, it should be ready within a couple of weeks. Use the mobile or email for now.

COVID-19 statement

We are continuing business as normally as possible during the current situation. In general, things have stabilised somewhat, so any delays with order fulfilment should be minimal.

UK Retail / International Retail customers: There are no major problems at present. Our central buying group warehouse staffing level is now back to normal, orders despatched from here in Sheffield are unaffected.

Industrial customers: Our most popular items - LS69001 is in stock ready for despatch. LSM11B is also in stock, large quantities have a 10 working day lead time.

Bulk order account customers (>10 sensors) - Contact us directly via email. Denso DOX-0109 please check with us for availability.

Assembly room hygiene: Since the beginning of this situation, manufactured items are wiped down with soap solution as per official guidelines before packing. We will continue to do this for the foreseeable future.


Honda Accord F20B6 1999-2003 2.0 front pre-cat regulating lambda sensor

OEM DENSO Honda Accord lambda sensor for 1997cc 2.0i F20B6 145bhp engined models, years 1997-2003. No other sensor will work reliably with the F20B6. This part cures heater circuit malfunction and error codes caused by incompatible pattern parts.

Price is £169.99 all inclusive, free UK delivery. Save £50 on Honda dealership prices.

Update: Now includes exhaust sections, catalyser, front and rear sensors.

Click here for further details

Not your Honda? Know your OE part Number? Click here for lots of Honda cross references

Forester, Impreza 2.5 WRX, STi

Pre-cat Oxygen sensor for 2.5 models, genuine Denso

Denso have updated this sensor, moving from the old blue sheath / grey connector design to a new Yellow connector and cable. The older type is being discontinued.

  • New design, pre-cat sensor for various Subaru 2.5 models
  • Replaces 22641AA211, 22641AA32A, 22641AA490
  • Price is cheaper by 15% compared to previous sensor

Please click here for details.

If you have a different subaru, see this list instead (long list, might take a while to load)

> > OBD-II fault code search

Input your P-codes right here! Click in the box, type, then press GO

>> Lambdapower Part Numbers

To search for our own part numbers, LP- or LC- style, please click in the box, type, and press 'GO'


Lambda Sensor Bosses and blanking Plugs / Bungs

Lambda mounting bosses and blanking plugs, plus our new thru-hole mounting boss, ideal for smokestack / chimney mounting of M18 lambda sensors without having to weld. Prices include postage. See this page for details


22mm Lambda Sensor Socket

Professional Quality 22mm Lambda Oxygen Sensor socket, available in standard reach and extra-long reach. Suitable for all standard form-factor 22mm hex Zirconium and Titanium sensors. 3/8 inch drive. For details click here.

Very Quick Guide to Lambda Sensors

A lambda sensor is an electronic sensor that fits into the exhaust system. It is sometimes called an Oxygen sensor, O2 sensor, or AFR. Its purpose is to send a signal to the ECU to indicate how much oxygen is in the exhaust gases. This in turn indicates how efficiently the engine is running. The ECU uses this information to adjust the engine's fuelling as you drive.

What happens if it fails?

MOT emissions failure, excessive fuel consumption, catalyst failure, poor performance, engine check warning light, fault codes are all symptoms that can be associated with Lambda sensor failure. The Lambda sensor's efficiency deteriorates over a period of time.


No maintenance of the Lambda sensor is required and there are no serviceable parts. Similar to a spark plug, when it's worn out it should be replaced.

Where is it?

Mounted on the engine exhaust manifold or exhaust pipe, or under the vehicle for the rear sensor. Modern engines (2005->) with a close-coupled catalyst have the sensor inside the engine compartment.

Cars made after year 2000 have at least two sensors, front and rear, and are termed OBDII compliant. Multiple sensors enable the ECU to better judge the efficiency of individual cylinders.

How can I replace it?

Firstly consult our fitting guide - it's roughly the same as fitting spark plugs. Or get your garage to do it. Some garages will not fit 'universal' type sensors, please check with them first if buying one.

Use the green button to search for your car step-by-step
We specialise in all types of Lambda Sensors. Call or email if you need assistance!

Please email or phone 07806 705407 or 07806 705407 if you are having difficulty finding the parts you need.

If possible, have your MOT emissions test results, ECU warning light fault codes, and vehicle registration number (UK only). If not, don't worry we can still help! If emailing, you are also welcome to scan your MOT emissions test into your PC and attach it to your email - the more information we have the better.

LSM11B biomass sensor industrial uses

0258104002 / 0258104005 LSM-11 - we have our own supercession for these parts. LSM11B direct-fit. See this page for details. Bulk order enquiries welcome.


LSM-11 supercession has arrived!

We are pleased to announce our LSM-11 Supercession parts are now available. Also replaces 0258104002 and 0258104005. Two options are available, one with dedicated in-line control unit (more accurate, more flexible, optional digital output, future-proof), or direct-fit (available immediately to order from this website). Our sensors use only quality German or USA made sensing elements.

5-wire LSU4.9 oxygen sensors from BOSCH are available from stock off-the-shelf as normal, price has been reduced for our own-brand version (uses top-quality BOSCH sensor). Suits Froling TM320, Stoker, and others. See this page for details.


NOX sensor for FSi models and EGT sensors

NOX sensors for Volkswagen FSi models. Cures DTC 17443 and P1035 Emissions Warning Sensor fault codes

Other VW resources

VW VR6 (click for list) and R32 (click for list) sensors, part of our legacy "Classic Line" range of VW parts. Diagram: Bank finder, VR6 bank numbering, VR6 cylinder number diagram for VR6's with two exhaust manifolds & four sensors

Need an exhaust gas temperature EGT sensor? New stocks of VAG 03L906088 series, BMW 11787557705, FORD/VOLVO 12B591 AA 12B591 BA 12B591 CA 12B591 DA, RENAULT 8200 and 8201 series. New EGT webpage coming soon, in meantime contact us for details!

OEM Crossrefs

Not your car? ** Please click here to start your vehicle search **
Do you have the OEM part number? Click here to search for it
Send us an Email with car details and Reg Number
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Universal Lambda Sensors from £29.99

Revised and extended range! If in doubt which one you need, please contact us. See all our universal sensors here

Dynojet Rolling Road Sensors

Click for more info!

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Diagnostic & Fitting Advice and Technical Procedures are for information only and no liability is implied therein. All site content, text, images, and application lists are copyright ©2003-2020 Lambdapower and no reproduction of any material is allowed in any form without our written consent. E&OE
Registered Office: Unit 22A Baltic Works, SHEFFIELD, S9 3QA. 07806 705407. CEO Jamie Field. UK VAT Reg No. 131050672 All rights reserved.