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Knock sensor

P0328 Knock sensor signal too strong

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P0328 means: Knock sensor signal too strong. The knock sensor listens for engine knocking. Drive gently and have the car checked soon. The repair usually costs about €60–300 in Estonia. The most common cause: connector or wire. Other possible causes: sensor has failed or come loose, fuel octane too low.

Is it safe to drive?Get it checked soonDrive gently and have the car checked soon.
Typical repair cost€60–300parts and labour in Estonia

What it means

The knock sensor listens for engine knocking. If it doesn't work, the engine computer retards the ignition to be safe and the engine loses power. The sensor voltage is too high. Usually a wire is shorted or the sensor has failed.

What could be wrong

  1. 1Connector or wire
  2. 2Sensor has failed or come loose
  3. 3Fuel octane too low

What you can check yourself

Fill up with proper fuel and check the sensor connector. The sensor is on the engine block, under the intake. 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 and wiring
  2. We check the sensor mounting
  3. We replace the sensor

Standard SAE description: Knock Sensor 1 Circuit High Input (Bank 1)

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 P0328 mean?

Knock sensor signal too strong. The knock sensor listens for engine knocking. If it doesn't work, the engine computer retards the ignition to be safe and the engine loses power. The sensor voltage is too high. Usually a wire is shorted or the sensor has failed.

Can I drive with code P0328?

Drive gently and have the car checked soon.

How much does it cost to fix P0328?

Roughly €60–300 in Estonia. The price depends on exactly what has failed and on the car.

How is P0328 fixed?

We measure the sensor and wiring. We check the sensor mounting. We replace the sensor.

Related codes

P0325Fault in the knock sensor wiringP0326Knock sensor reads wrongP0327Knock sensor signal too weakP0330Fault in the second knock sensor wiring

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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