CAR PROBLEM GUIDES · HYPERION PERFORMANCE
KNOW THE SYMPTOMS.
FIND THE NEXT STEP.
Clear answers to common diesel warning lights, running issues and economy questions. Understand the possibilities, then contact Hyperion with your warning message and vehicle details to discuss the next step.
These guides explain common possibilities. They do not diagnose your particular vehicle. Your handbook, the actual warning and professional checks take priority.
Looking for a tuning service?DPF & REGENERATION
2 MIN READDPF Warning Light: Causes, Short Journeys & Next Steps
What a DPF warning can mean, why short journeys can affect regeneration, and why diagnosis matters before considering cleaning, repair or an off-road delete.
Read the guideEGR & ENGINE RUNNING
2 MIN READEGR Valve Symptoms: Rough Idle, Hesitation & Warning Lights
A simple guide to possible EGR valve symptoms, sticking valves, P0401/P0402 flow codes and why an engine warning needs diagnosis rather than guesswork.
Read the guideADBLUE & NOx
2 MIN READAdBlue Countdown Warning: What It Means & What to Check
Understand AdBlue low-level warnings, system faults, no-restart countdowns and the role of nitrogen oxides (NOx), with practical next steps for drivers.
Read the guideDIESEL ECONOMY
2 MIN READWhy Has My Diesel Fuel Economy Dropped? Checks Before an Eco Remap
Poor diesel MPG is not always a tuning problem. Consider journey pattern, load, maintenance and possible faults before choosing an Eco Remap in Solihull.
Read the guideYOUR NEXT MOVE
LET’S TALK
ABOUT YOUR VEHICLE.
Warning light or running issue? Send Hyperion a photo of the message, your vehicle details and any fault codes. We’ll discuss the options we can offer and what needs checking before remapping.
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