ForgeFlow Engineering

AutoClarity: Stop Guessing, Start Diagnosing.

👉 For car owners, DIY mechanics & automotive learners

Your personal assistant for understanding vehicle trouble codes. Get clear, concise explanations for any Diagnostic Trouble Code (DTC), along with common causes and potential solutions.

Diagnose Your Code Now
A close-up of a modern car's dashboard showing various warning lights.

From Code to Clarity in Seconds

Plain English Explanations

We translate cryptic codes like "P0420" into easy-to-understand descriptions of the underlying problem.

Common Symptoms

Connect the code to what you're actually experiencing, like rough idling, poor fuel economy, or warning lights.

Structured Causes

Get a list of the most common causes, ordered from most to least likely, to guide your diagnosis.

Actionable Solutions

Understand potential fixes, from simple DIY checks to repairs that may require a professional mechanic.

Empowering Car Owners and Enthusiasts

When your "Check Engine" light comes on, it's easy to feel powerless. A standard OBD-II scanner gives you a code, but what does that code actually mean for you and your car? Forums are filled with conflicting advice, and repair shops can be intimidating if you don't speak their language. AutoClarity was built to bridge this knowledge gap. Developed by an automotive engineer, our tool is more than just a code lookup dictionary. It's a diagnostic assistant powered by a structured database and intelligent logic. We've compiled information from thousands of technical service bulletins, repair manuals, and expert mechanic knowledge into a clear, actionable format.

Our goal is to demystify car repair and maintenance. An illuminated check engine light can trigger anxiety and uncertainty, but it doesn't have to. The On-Board Diagnostics (OBD-II) system in your vehicle is a powerful computer that constantly monitors performance. When it detects an anomaly—anything from a loose gas cap to a complex transmission issue—it stores a Diagnostic Trouble Code (DTC). This code is the key, but it's not the full story. AutoClarity helps you read the story.

A Smarter Diagnostic Process

AutoClarity is designed to help you think like a mechanic, providing a logical workflow that saves time and prevents unnecessary repairs. Here’s how our structured process helps you go from code to solution with confidence:

  • Code Interpretation: The first step is providing a clear, jargon-free explanation of what the DTC means. We explain which system is affected (e.g., "Catalyst System Efficiency Below Threshold") and what the car's computer is detecting. We provide context that a simple code definition lacks, explaining what the system is supposed to do and how the fault affects it.
  • Symptom Correlation: We list common symptoms associated with the code. Does your car hesitate when accelerating? Is your fuel economy worse than usual? Is there a strange noise or smell? This helps confirm that the code aligns with the real-world performance of your vehicle, giving you confidence that you're on the right track.
  • Probabilistic Causes: This is where AutoClarity truly shines. A single DTC can have multiple potential causes. A P0420 code, for instance, doesn't automatically mean you need a new, expensive catalytic converter. It could be a much cheaper faulty oxygen sensor, an exhaust leak, or even an engine running condition causing the issue. Our system presents these potential causes in a logical, probabilistic order, suggesting you check the simple, inexpensive things first. This structured approach can save you hundreds or even thousands in unnecessary parts and labor.
  • Actionable Solutions & DIY Guidance: For each potential cause, we outline clear, actionable solutions. We differentiate between simple checks you might be able to do yourself (like checking for a loose gas cap, inspecting a visible vacuum leak, or cleaning a sensor) and more complex repairs that are best left to a qualified mechanic. We provide step-by-step guidance where possible, empowering you to take control of the diagnostic process.

By providing this structured, expert-informed guidance, AutoClarity empowers you to have more informed, confident conversations with your mechanic, tackle simple fixes yourself, and ultimately gain a deeper understanding of the complex, interconnected systems in your modern vehicle.

Our Engineering Methodology

AutoClarity isn't just a database of codes. It's built on a diagnostic logic engine that mimics an experienced mechanic's thought process. We use a weighted scoring system based on failure-rate data, component cost, and labor complexity to rank potential causes. Our AI component helps to analyze symptom patterns and refine these probabilities, ensuring you get the most relevant and cost-effective diagnostic path, not just a list of possibilities.

Built by an MSc Automotive Engineering graduate with a background in vehicle systems and simulation research.

What Our Users Say

"The check engine light on my Golf came on and I was quoted £800 for a new catalytic converter. AutoClarity suggested I check the oxygen sensor first. A £60 part and an hour of my time fixed it. Saved me a fortune!"

- Mark T., DIY Enthusiast

"As someone new to working on cars, this tool is invaluable. It breaks down the problem logically and helps me understand what to look for. It's like having a mechanic guiding you."

- Sarah J., Automotive Learner

Frequently Asked Questions

Related Reading

OBD-II Trouble Codes Explained

What they mean, how they're structured, and how to read them.

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