WebAnswer (1 of 20): If it is the cap, it’s either too loose (turn it until it clicks once or twice - you don’t need to crank it down, and that’s a good way to break the cap) or it’s gotten … Web2005 Cadillac DeVille Check Engine Light Due to Gas Cap Issue. Illumination of the check engine light may be the result of a loose or worn gas cap . Affected Model Years This issue affects Cadillac DeVille model years 1996, 1997, 1999, ... Gas cap causes sensor to trigger the service light. Small vac leak. and as everyone know the heads are ...

Can A Loose Gas Cap Cause A Check Engine Light? (Helpful Guide)

WebOct 23, 2009 · Why can the absence of a simple gas cap cause the check engine light to illuminate? The fuel system in your car is a sealed system that traps harmful gas fumes. … WebIf your check engine light is on, it could indicate a variety of issues, ranging from "Oh no..." to "Oh, that's not so bad." Here at AutoZone, we've diagnose... desk with shelf for printer

Is your check engine light on? Here are 10 possible reasons why

WebThe gas cap is often the culprit, as a loose or damaged gas cap can cause the fuel system to lose pressure and trigger the warning light. Therefore, the first step you … WebJul 26, 2009 · It takes three or more engine starts before the Check Engine light comes on. If you tighten the gas cap, the light may go out after three or more engine starts. If not, you will have to go to a service station or buy your own OBD II (On Board Diagnostic version II) code reader. They cost $50 - $100, or more. A loose gas cap is code 170, despite ... WebUsually, your fuel cap is loose, and if it is, tightening your gas cap will solve this. If the cause is not a loose fuel cap, have a mechanic check the issue. Your fuel cap plays a vital role in your car’s fuel system, preventing fuel evaporation and contamination. Sometimes a leak somewhere in the system can trigger the fuel cap indicator to ... desk with shelves australia