Dual Action Roadside

Questions and answers

Fault Code Diagnostics Reports: Questions and Answers

Understand how fault codes help guide further investigation and why a scan is not the same as a repair or a complete safety inspection. Visit the diagnostics service page for booking details.

Understanding fault codes

Does a fault code prove which part needs replacing?
No. A stored code points to a condition detected by a vehicle system. It is a starting point for investigation, rather than proof that the component named in its description has failed. Further checks may be needed to distinguish a component problem from wiring, connections or another cause.
How should I use a fault-code report?
Use it as information to support the next repair discussion. Keep it with your description of the symptoms and explain when they occur. The codes should be considered alongside the vehicle’s behaviour and any further checks; a list of codes alone is not a complete repair plan.
Does clearing a code fix the fault?
No. Removing a stored code does not repair its cause. A warning can return if the problem remains. Discuss the findings before asking for codes to be cleared, because stored information may help with further investigation.

Scope and next steps

Are mechanical repairs included?
No. Dual Action Roadside’s fault code reading and diagnostics service is an information service and does not include mechanical repairs. Check the service details and discuss the symptoms before booking.
Will a scan confirm that my vehicle is safe to drive?
Do not treat a fault-code scan as clearance to drive. Follow the vehicle handbook and seek advice about warning lights or changes in how the vehicle behaves. If a warning appears while driving, follow the manufacturer’s instructions and road-safety guidance; do not stop in a live lane unless absolutely necessary.
Can every vehicle system be read?
Do not assume that every system on every vehicle can be accessed. Give your registration, make, model and the warning or symptom you want investigated before booking, so support for the requested work can be checked.

Need help with your vehicle?

Mon–Sun 08:00–20:00 only; bank holidays unchanged; no out-of-hours attendance.

For urgent roadside assistance, use the phone details on the service page. The contact form is for non-urgent enquiries.

Mobile Vehicle Fault Code Reading & Diagnostics Reports Send a non-urgent enquiry

Mobile-only service — we come to your vehicle. Customers do not visit our operating base at WD19 6YB.

Our standard service area is a 10-mile radius from WD19 6YB. Please provide your postcode to confirm coverage; town and postcode listings do not mean every address is within the standard radius. Beyond this radius, an additional travel charge is quoted and agreed before booking. This applies to all four mobile services; EV Battery Health Checks remain by appointment.

© 2026 Dual Action Roadside. All rights reserved.