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Fuel and air

P0191 Fuel pressure sensor reads wrong

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P0191 means: Fuel pressure sensor reads wrong. The fuel pressure sensor tells the engine computer how much pressure there is in the fuel rail. Drive gently and have the car checked soon. The repair usually costs about €80–450 in Estonia. The most common cause: connector is loose or corroded.

Is it safe to drive?Get it checked soonDrive gently and have the car checked soon.
Typical repair cost€80–450parts and labour in Estonia

What it means

The fuel pressure sensor tells the engine computer how much pressure there is in the fuel rail. The sensor works, but its reading doesn't agree with the other sensors.

What could be wrong

  1. 1Connector is loose or corroded
  2. 2Wire is broken
  3. 3Sensor has failed

What you can check yourself

Check the sensor connector. The sensor is usually at the end of the fuel rail. You can check the simple things yourself, but the repair is best done in a workshop.

How we fix it

  1. We measure the sensor supply and signal
  2. We repair the wire
  3. We replace the sensor (on some cars together with the rail)

Standard SAE description: Fuel Rail Pressure Sensor Range/Performance

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 P0191 mean?

Fuel pressure sensor reads wrong. The fuel pressure sensor tells the engine computer how much pressure there is in the fuel rail. The sensor works, but its reading doesn't agree with the other sensors.

Can I drive with code P0191?

Drive gently and have the car checked soon.

How much does it cost to fix P0191?

Roughly €80–450 in Estonia. The price depends on exactly what has failed and on the car.

How is P0191 fixed?

We measure the sensor supply and signal. We repair the wire. We replace the sensor (on some cars together with the rail).

Related codes

P0068Air flow doesn't match the accelerator positionP0087Fuel pressure too lowP0088Fuel pressure too highP0089Fuel pressure regulator can't hold pressure steadyP0093Large leak in the fuel systemP0101Mass air flow sensor reads wrongP0230Fault in the fuel pump power supplyP0627Fault in fuel pump control

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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