Why does my check engine light come on when I go up a hill?

Rick M has suggested a good reason And another possible issue could be something fitted with a tilt switch like the Hill Start Assist. It could also be a sensor in the fuel supply system or the fuel tank. Going up hill throws the fuel to the back of the fuel tank.

Can elevation cause check engine light?

Higher elevations mean engines need less octane in the fuel to properly start running. If you put this lower octane in your vehicle and then drive to lower elevations, your check engine light may come on.

Why do cars overheat at high altitude?

It could be as simple as a radiator cap not holding enough pressure. The reason it does this is because pressurized water boils at a higher temperature, and once the water starts to boil the engine over heats VERY QUICKLY due to the air pockets. While overheating usually leads to boiling, the opposite can be true too.

What to do when your check engine light goes on?

During a check engine light diagnostic, a certified mechanic from YourMechanic would use a code scanner to retrieve the specific diagnostic trouble code (s) from your car’s PCM that have caused the check engine light to illuminate.

What to do if your car is losing power while driving up hills?

If you start to have acceleration problems as you attempt to drive uphill, do not slam down on the gas pedal to try to get up the hill. You will only put more stress on the engine which won’t do any good if there is an issue somewhere in the engine.

What happens to your car when you go up a hill?

When you are driving a car, your engine and all the other components must work extra hard if you’re moving up an incline or a hill. You need to have enough power to be able to accelerate a vehicle anywhere, especially up a hill where gravity is pulling against it.

Why does my check engine light come on when I leave my cap off?

If you leave your gas cap off accidentally, you’ll notice this light rather quickly. These leaks in the gas tank recirculation (also known as EVAP emission control) system are often grouped as “small” or “large” leaks.

Why does my check engine light go on when I go up a hill?

A 2016 Impreza 2.0 should yield 28 mpg city 37 mpg highway. If it is only yielding 11 KM/L at 120 KM/PH then there is likely an issue with the vehicle, as it should be yielding close to 15… First have an experienced technician, like one from YourMechanic, look the vehicle over and read the fault codes from the vehicle.

Is it safe to drive with check engine light on?

If the vehicle is not overheating and the check engine light is NOT “flashing”, and there are no other outward indications of the engine malfunctioning, it is safe to drive the car until it is convenient for you to request a check engine light diagnostic.