Engine Codes Lights Symbols

Welcome to the Engine Codes, Lights, and Symbols guide. Dashboard warning lights are your engine’s way of asking for help. I help you understand what those glowing icons and OBD-II fault codes really mean. We break down common P-codes from P0171 to P0300. Learn why your Check Engine Light is flashing or staying on. I share 40 years of diagnostic tips to help you find the root cause. Stop the “parts-cannon” approach and start testing. These guides make sense of your vehicle’s complex computer systems.

Reduced Engine Power Warning Light – What To Do And Why?

12/07/2025

Reduced Engine Power, can have many different names. All depending on the year, make and model of your vehicle. So, whether its, reduced engine power, limp mode, fail safe mode or limp home mode, they […]

Check Engine Light (CEL) – What Can Cause It To Come On

11/28/2025

Seeing a Check Engine Light (CEL), is one of the most frustrating and confusing factors of owning a vehicle. So, the (CEL) is just a light, with no information. It tells you that there is […]

OBD Engine Codes and (CEL) Lights – Learn How to Read Them

07/02/2025

So, OBD engine codes and (CEL) lights, cannot be fixed by simply resetting them or disconnecting the battery. And, eventually the OBD engine codes and (CEL) lights will come back. But, stay cool, the codes […]

Dash Warning Lights – Only Provide A Warning Something Is Wrong

06/21/2025

Most dash warning lights, tell you that a fault has occurred inside the vehicle’s system. So, dash warning lights provide an idea – sometimes precise, sometimes vague – of what’s wrong with a vehicle. But, […]

OBD1 – Trouble Code Information, For Honda 95 & Earlier Models

01/11/2024

So, it’s the weekend, you’re out enjoying the open road. And, WHAM, your OBD1 “Check Engine” light rears its ugly head. Now, you are wondering, what is wrong with the engine? So, all you need […]

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