Is the boost pressure sensor / intake manifold pressure sensor defective? The info!

Reading time 3 Min.

Recently updated on October 29, 2023 at 08:41 am

Is the boost pressure sensor / intake manifold pressure sensor defective on the moor? We know the symptoms, we know how the change works and we also have an initial guideline for the costs incurred. Yes, first a few general details. the Boost pressure or intake manifold pressure sensor constantly determines the pressure in the intake tract and forwards the recorded values ​​to the control unit. In addition to thermal, electrical or mechanical overload (e.g. due to vibrations), the causes of a defect are often also contamination due to contaminated air. Symptoms of a dirty or defective boost pressure sensor are that the engine often runs in the Emergency run jumps and therefore the engine warning light lights up, the fuel consumption is increased and the engine may also run rough. So the car has a limited performance. Also a Error memory entry This can result in a message such as "boost pressure implausible" or "boost pressure too low".

Continue?

If the vehicle continues to be used despite the defective boost pressure sensor, the malfunctions or failure of the boost pressure control can lead to high prices Consequential damage to the engine and turbocharger come. Therefore, when the symptoms first appear, a workshop should be visited very quickly, which will carry out an accurate diagnosis. Furthermore, driving the vehicle is only possible with great reluctance.

Change of boost pressure or intake manifold pressure sensor

Since some of the symptoms can also occur with other defects in the boost pressure system or the turbocharger, the workshop must first carry out a repair cause diagnosis be performed. Otherwise, the sensor may be replaced and the problems that arise continue to exist. If the diagnosis is secured, then the defective sensor is replaced with a new part. Used parts are only recommended to a limited extent at this point, since the wear and tear on the inside is not visible here. The specific position of the sensor varies depending on the type of car. The intake manifold pressure sensor can therefore be located on the intercooler or on the intake manifold. Depending on the accessibility of the sensor, some surrounding parts such as the bumper must be dismantled beforehand. If the sensor is then accessible, it can be replaced with the new part quite easily.

Cost of switching?

Depending on the model, the sensor itself costs about 10 to 100 Euro. Well-known manufacturers of spare parts are Magneti Marelli, Bosch, Hella and Febi. Of course, there are also the costs for the change and the diagnosis. Replacing the sensor takes half an hour to a maximum of two hours. Depending on the hourly rate of around 100 euros, this results in labor costs of between 50 and 200 euros. This results in total costs of around 60 to 300 euros.

The following note is essential: For safety reasons, tuningblog recommends all repair, inspection and maintenance work exclusively to be carried out in a specialist workshop! Although our information is summarized to the best of our knowledge and belief, we cannot assume any liability for the content. All information is therefore "without guarantee".

Of course, that wasn't the end of it!

In this tuning blog category there are guides and instructions on common defects/repairs on the vehicle as well as on installing accessories/tuning parts. Our articles explain common defects and the corresponding repairs in a simple manner and also explain how the first signs of a defect become apparent.

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