Why Does My Check Engine Light Come On When It Rains

We worked on a ford truck once that triggered the check engine light every time it rained.

Why does my check engine light come on when it rains. Over the last 2 yrs i have noticed when it rains hard the check engine light flashes on and off always stayed off and only flashed for a few secons so never worried i have a 1 4 seat ibiza 2001. Here are the 10 most common issues that trigger it. I just assumed that the bulb was burned out. Now the engine light has come on and stayed on.

Since the 1980s many vehicles have been built to be run by the engine computer unit ecu which controls vehicle s drivetrain and auxiliary systems based on input from the vehicle s sensors this computer will make adjustments to your vehicle s performance to keep your ride running smoothly. Problem began about a year ago. My check engine light comes on when there is high humidity or when it rains and will usually go back off after it is dry. P0300 random multiple cylinder misfire detected.

It smooths out as i keep driving and after 5 mins of driving it when its raining car goes back to running smoothly even though the check engine light still blinks. When it does you can expect to see the check engine light. The last 8 months i have commuted 100 miles per day i have never changed or had the spark plugs changed. Why does my check engine light come on when i start my car.

The check engine light probably is coming on due the the misfire condition. It s common for the check engine light to come on momentarily when you first start your vehicle and then go off. The orange check engine light is a car s way of telling you something is wrong. I have access to a scanner and know that the car periodically throws a catalyst code but the light never comes on.

Today while solving a non working clock issue i had to take the instrument cluster to get to the clock. This is a normal sign that the car is testing its circuits. I have a 2000 toyota camry that has a unique problem. I haven t noticed a real difference in the performance when i m driving but we had a bad storm last night and it will not start this morning.

Go to pep boys or advance auto pats where they ll tell you free your codes causing the check engine light to be lit the code coming from your truck s computer will probably be one or more of. Every time it rains i start up my car and it runs roughly the check engine light comes on and blinks as well as the traction control light. After a lot of diagnosis we found water that was dripping onto a spark plug wire then running down the wire to the engine s head causing an occasional short. I m pretty convinced that it is weather related.