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Turbo and boost pressure

P0238 Boost pressure sensor signal too high

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P0238 means: Boost pressure sensor signal too high. The boost pressure sensor measures pressure in the intake. Drive gently and have the car checked soon. The most common repair costs about €80–160 in Estonia, depending on make and model. The most common cause: sensor is dirty with soot or oil.

Is it safe to drive?Get it checked soonDrive gently and have the car checked soon.
Sensor replacement€80–160parts and labour in Estonia, depending on make and model

What it means

The boost pressure sensor measures pressure in the intake. With this fault the engine computer often limits power. The sensor voltage is too high. Usually a wire is shorted or the sensor has failed.

What could be wrong

  1. 1Sensor is dirty with soot or oil · Sensor replacement €80–160
  2. 2Connector or wire · Wiring or connector repair €45–90
  3. 3Sensor has failed · Sensor replacement €80–160

What you can check yourself

Check the sensor connector. The sensor is usually on the intercooler pipe. You can do the simpler checks yourself.

How we fix it

  1. We compare the sensor reading with atmospheric pressure
  2. We clean the sensor or repair the wire
  3. We replace the sensor

Standard SAE description: Turbo/Super Charger Boost Sensor A Circuit High

This code usually comes with: Check engine lightSee what the light means →

Want a definite answer?

Bring the car to our workshop in Estonia for diagnostics. We read the fault codes, test the sensors and tell you what is wrong. Repair price depends on the work involved, generally €45 per hour.

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Questions

What does fault code P0238 mean?

Boost pressure sensor signal too high. The boost pressure sensor measures pressure in the intake. With this fault the engine computer often limits power. The sensor voltage is too high. Usually a wire is shorted or the sensor has failed.

Can I drive with code P0238?

Drive gently and have the car checked soon.

How much does it cost to fix P0238?

It depends on the cause: sensor replacement €80–160; wiring or connector repair €45–90. Prices include labour at €45/h, depending on make and model.

How is P0238 fixed?

We compare the sensor reading with atmospheric pressure. We clean the sensor or repair the wire. We replace the sensor.

Related codes

P0237Boost pressure sensor signal too lowP0239Turbo and boost pressure: circuit fault ("B")P0236Boost pressure sensor reads wrongP2262Turbo and boost pressure: not detectedP2263Turbo not delivering the right boostP2562Turbo boost control position sensor: circuit fault ("A")P0424Catalyst temperature sensor: too low (heated catalyst, bank 1)P0402Too much gas flowing through the EGR valve

Based on AI combined with our hands-on workshop experience and knowledge. This information is general and prices are approximate (Estonian workshop rates). The same code can mean different things on different cars. Only an inspection of the car gives a definite answer.

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