NOx Sensor Repair – Bridgend

NOx sensors monitor the level of nitrogen oxides in your car or van’s exhaust and are a key part of the emissions control system on modern diesel vans.

When a NOx sensor fails or gives incorrect readings, it triggers warning lights, can put the engine into reduced performance mode, and causes the AdBlue system to behave incorrectly if your car or van is fitted with SCR (selective catalytic reduction).

Symptoms of a NOx Sensor Problem

Engine management or emissions warning light
AdBlue system warning or incorrect consumption
Reduced engine performance or limp mode
Failed emissions check at MOT
Fault codes related to the SCR system or exhaust aftertreatment

NOx sensor faults are relatively common on high-mileage diesel vans, particularly those used on short urban runs where exhaust temperatures don’t regularly get high enough to keep the system clean.

Diagnosis Before Replacement

A NOx sensor fault code doesn’t always mean the sensor itself has failed; it can also point to issues with wiring, AdBlue quality, or the SCR catalyst. At South Wales Wet Belt & Service Centre, we carry out a proper diagnostic assessment before recommending replacement, so you’re not paying for a new sensor when the root cause lies elsewhere.

We work on cars, vans and light commercial vehicles, and our Bridgend workshop is equipped to handle the diagnostic and repair work on modern diesel emissions systems correctly.

South Wales Coverage from Bridgend

We’re based ten minutes from Junction 35 of the M4, working with drivers from across Bridgend, Cardiff, Swansea, and Porthcawl. If your car or van is flagging an emissions or AdBlue-related fault, get in touch, and we’ll find out what’s actually causing it.

South Wales Wet Belt & Service Centre in Bridgend is more than just a standard workshop. From specialist servicing and van sales to fast-fit repairs and fleet maintenance, we’re the garage businesses and drivers across South Wales rely on.

To find out more about NOx Sensor Repair in Bridgend, contact us online, or call us directly on 01656 334 335.