Lambda / O2 Sensor Faults & ECU Enquiries
A lambda or oxygen-sensor warning needs to be considered alongside the vehicle's running condition and exhaust specification. If you found this page while researching O2 sensor removal, describe the underlying problem before selecting a software change.
Standard and modified exhaust systems
Explain whether the vehicle retains its original exhaust components or has been modified. Include the exact diagnostic codes, when the warning occurs and any sensor or exhaust work already attempted. These details are more useful than the sensor name alone when discussing an enquiry.
A warning after a hardware change should not automatically be treated as a request to hide the fault. The complete specification and the cause of the warning need to be understood. This page does not repeat the old website's fixed-price removal offers.
Information to send GAD Tuning
Provide the engine and model details, exhaust specification, existing tune and diagnostic information. Tell us whether you are investigating a fault or planning hardware changes. We can discuss the enquiry and establish what further information is needed for the particular application.
Related information
Talk to GAD Tuning
Send us your vehicle's make, model, year, engine, gearbox and postcode, together with any modifications or existing faults. We will discuss your enquiry and confirm the appropriate next step.