Finding the Reason Behind the Warning Light
DPF problems are often caused by another issue. Short journeys, failed sensors, boost leaks, EGR faults, glow plug problems, low temperature running or previous engine faults can all affect regeneration.
We check the fault codes, live data and symptoms before recommending repair work. The goal is to understand why the DPF problem happened, not just clear the warning light for it to return.
What We Investigate
- DPF warning lights and regeneration issues
- Engine management lights and limp mode
- Pressure sensor and temperature sensor faults
- Boost, EGR and air-flow related problems
- Blocked, overloaded or soot-related DPF concerns
- Underlying engine faults that stop regeneration
Why Diagnosis Comes First
- A forced regeneration is not always the right answer
- The root cause needs to be found to stop repeat faults
- Sensor data can show whether the DPF is genuinely restricted
- Engine faults can prevent successful regeneration
- Clear advice helps avoid wasting money on temporary fixes
Local Garage Support in Trowbridge
NGM Motors is based at Lower Court, Trowbridge, BA14 8PX. We help customers from Trowbridge, Melksham, Bradford-on-Avon, Westbury, Frome, Warminster, Chippenham, Bath and surrounding Wiltshire areas.
Frequently Asked Questions
We can investigate DPF faults and advise the correct next step. A regeneration or clean is only suitable in certain situations.
Often there is an underlying fault stopping the DPF from regenerating properly, such as a sensor, EGR, boost or temperature issue.
It depends on the warning and symptoms. If the vehicle is in limp mode or running badly, it should be checked as soon as possible.
Yes. DPF faults are often linked to wider engine management issues, so we check the system properly.
Call, WhatsApp or book online. NGM Motors will confirm your request and advise the next step clearly.