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Diesel particulate filter (DPF)

P0471 Exhaust pressure sensor reads wrong

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P0471 means: Exhaust pressure sensor reads wrong. The pressure sensor measures how clogged the particulate filter is. 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 hose is loose, split or blocked.

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 pressure sensor measures how clogged the particulate filter is. If the sensor gives false readings, the engine computer doesn't know when to burn off the filter.

What could be wrong

  1. 1Sensor hose is loose, split or blocked · Sensor replacement €80–160
  2. 2Sensor has failed · Sensor replacement €80–160
  3. 3Connector or wire · Wiring or connector repair €45–90

What you can check yourself

Check the sensor's two hoses. They often crack from the heat. You can do the simpler checks yourself.

How we fix it

  1. We compare the sensor reading
  2. We replace the hoses
  3. We replace the sensor

Standard SAE description: Exhaust Pressure Sensor Range/Performance

This code usually comes with: Diesel particulate filter (DPF) 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 P0471 mean?

Exhaust pressure sensor reads wrong. The pressure sensor measures how clogged the particulate filter is. If the sensor gives false readings, the engine computer doesn't know when to burn off the filter.

Can I drive with code P0471?

Drive gently and have the car checked soon.

How much does it cost to fix P0471?

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 P0471 fixed?

We compare the sensor reading. We replace the hoses. We replace the sensor.

Related codes

P0472Exhaust pressure sensor: signal or voltage too low ("A")P0470Exhaust pressure sensor: circuit fault ("A")P0438Catalyst temperature sensor: signal or voltage too high (bank 2, sensor 1)P0473Exhaust pressure sensor: signal or voltage too high ("A")P0474Exhaust pressure sensor: signal drops out at times ("A")P0402Too much gas flowing through the EGR valveP0033Turbo bypass valve: circuit fault

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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