What is a barometric sensor?
Barometric sensors (otherwise known as pressure sensors) read the barometric pressure within your car. It then uses this information to adjust the fuel trim and engine timing to avoid an excess amount of air and incorrect fuel levels. Common problems associated with failure in barometric sensors include exposure to the elements, leading to deterioration.
When should I replace the barometric sensor on my car?
It’s not often that a barometric sensor needs to be replaced. However, if you are experiencing the following common problems, it might be worth taking your vehicle to a licensed mechanic:
Poor engine performance: If your vehicle is sluggish, taking longer to accelerate, or is just lacking in overall power, the answer is most likely your barometric sensor. When the readings and signals from your barometric sensor are compromised, the computer calculations for your car are also in flux, resulting in less power.
Check engine light: Anytime your check engine light is illuminated, it’s best to pull over and assess/test your vehicle, as it could be alerting you to a potential problem. A faulty barometric sensor will cause your check engine to light up, have your vehicle inspected by a mechanic.
Keep in mind: The changes above could also be caused by MAP sensor failure. The manifold absolute pressure sensor monitors intake manifold pressure to calculate the correct fuel injection ratio. MAP sensor replacement costs are similar to baro sensor replacement costs.
How often should a barometric sensor be replaced?
A barometric sensor is designed to last the length of your car. Therefore, repairs are only required if early deterioration happens, which is more likely than the part aging out. However, it’s recommended to have your barometric sensor calibrated periodically to achieve the highest level of accuracy in its readings.
Can I replace my barometric sensor myself?
Yes, you can replace a barometric sensor yourself, but it’s not advised. Be aware that a barometric sensor removal and installation is a multi-step process that requires a mid to intermediate level understanding of cable connections, calibration, and voltage. If you’re not confident in these areas or general car repair, it’s best to visit a licensed mechanic.