How to clean the boost pressure sensor

Cleaning Interval

When to clean the boost pressure sensor

If you have a diesel car with a 5-cylinder engine from 2012 or newer, or you have a 4-cylinder VEA engine, then you need to clean the boost pressure sensor every 30,000–80,000 km. Otherwise, your engine power will rapidly decrease, and you can expect engine DTCs related to boost pressure.

Sensor Location

Locating the sensor

You need to locate this sensor under the plastic cover. If you stand in front of the car, you will have it in the right bottom corner under the cover. This is the same place for VEA and older 5-cylinder engines.

Removing the Sensor

Removing the boost pressure sensor

Unscrew the TX27 or TX30 screw and remove the sensor.

When you remove it, you will see something like this:

Cleaning the Sensor

Cleaning procedure

You need to scrape this mess off with a needle or a small flat screwdriver, but be really careful and do not use too much power.

Once your work is done, you will see something like this:

And the sensor should look like this:

There are small holes inside — you need to clean them also. You can clean them with petrol or alcohol.

Finishing

Finishing the work

Once you finish, you can put it back, and you can also reset the adaptation data for ECM — recommended.