Warning lights can mean dozens of different things. RHR Automotive uses professional diagnostic equipment to read fault codes accurately, identify the root cause, and give you a clear picture of what your vehicle needs — without guesswork.
Modern vehicles are controlled by a network of electronic control units (ECUs), each monitoring different systems — from the engine and gearbox to the brakes, emissions and body electronics. When something goes wrong, the relevant ECU stores a Diagnostic Trouble Code (DTC) and triggers a warning light on your dashboard.
Generic code readers can tell you which code is stored, but interpreting that code correctly requires experience, access to manufacturer data, and the right live-data tools. At RHR Automotive, we use professional-grade diagnostic equipment that goes beyond basic code reading — allowing us to view real-time sensor data, freeze-frame information, and perform component-level testing.
This means we can identify whether a fault code represents a genuine component failure or whether it is a symptom of an underlying issue such as a wiring fault, vacuum leak, or failing sensor. We explain our findings clearly so you can make an informed decision about any repairs needed.
Ignoring a warning light is never advisable. Some faults are immediately safety-critical, while others become significantly more expensive if left unaddressed. A professional diagnostic gives you the information you need to act quickly and avoid preventable damage to your engine or transmission.
Based in Poole, serving Bournemouth and the wider Dorset area. You deal directly with the mechanics working on your vehicle — no call centres, no middlemen.
We invest in professional-grade diagnostic tools to identify faults accurately, saving you time and unnecessary repair costs.
We'll explain exactly what needs doing and why before any work begins. No surprise invoices.
From city cars to light commercials, our workshop handles a wide range of vehicles from leading manufacturers.
Failed lambda sensors are one of the most common fault codes. They affect fuel mixture, economy and emissions directly.
A faulty EGR valve causes rough running, increased emissions and reduced power. Common in diesel vehicles.
MAF faults cause poor throttle response, black smoke and failed emissions readings. Often confused with other faults.
Misfires triggered by failing coil packs or spark plugs generate P030x codes and cause rough idle and power loss.
Diesel particulate filter faults are increasingly common. Full diagnostic helps distinguish a blockage from a sensor failure.
Gearbox faults range from solenoid failures to clutch wear. Proper live-data analysis is essential for accurate diagnosis.
Based in Poole, we regularly work with customers from across the region.
Our team is ready to help. Contact us today or submit a request and we'll be in touch promptly.