P0420 cat code or lambda sensor fault in Leicester? Our mobile technician diagnoses and resolves catalytic converter and oxygen sensor issues.
If you're seeing a P0420 or P0430 code, or your engine management light keeps coming back after clearing, the issue likely involves your lambda sensors or catalytic converter. These components work as a team — the lambda sensors measure oxygen levels in the exhaust, and the ECU uses that data to control fuelling and monitor cat efficiency.
Replacing a catalytic converter can cost £500–£2,000+, and lambda sensors aren't cheap either. Before committing to expensive parts, our professional diagnostics in Leicester can determine whether the fault is a genuine component failure or a software issue that can be resolved through ECU recalibration.
Our mobile technician covers Leicester and the East Midlands. We arrive with professional diagnostic equipment, identify the exact cause, and apply the right solution — all at your home or workplace.
Resolve P0420/P0430 and related fault codes that keep coming back after clearing. We fix the cause, not just the symptom.
Not every cat code means a new catalytic converter. We confirm whether it's a sensor issue, software fault, or genuine cat failure.
Cat replacements cost £500–£2,000+. If the issue is software-based, our ECU solution resolves it at a fraction of the price.
Professional diagnostic equipment identifies the exact cause — no guesswork, no unnecessary part swaps.
Find your vehicle and request a free, no-obligation quote. We'll confirm a date that suits you.
Our mobile technician arrives at your home or workplace in Leicester with all equipment needed.
Everything completed in a single visit. You'll notice the difference immediately.
Find your vehicle to see the expected gains and request a free quote for Lambda/Cat Solutions in Leicester.
Find Your VehicleOur mobile technician provides lambda/cat solutions services across Leicester and the wider East Midlands area.