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Welcome to our Fault Codes Guides section — your reliable resource for understanding and fixing automotive diagnostic trouble codes (DTCs), especially for modern Chinese car brands like Chery, Haval, Geely, Changan, and others.

If your vehicle's dashboard suddenly lights up with a cryptic code like P0420, P0171, or U0100, don’t panic — we’re here to help. Each guide explains:

* What the code means
* Common causes and symptoms
* How to diagnose and fix the issue
* Whether it's safe to keep driving

These step-by-step explanations are designed for DIY enthusiasts, mechanics, and car owners who want to save time and money by understanding what’s really going on under the hood.

Start exploring the fault codes by make and model — and take control of your car’s health.