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P0521 Mercedes-Benz Code - Engine Oil Pressure Sensor/Switch Circuit Range/Performance

- Code Popularity: 32,512 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P0521 Mercedes-Benz?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Low oil level or motor mechanical fault
  • Faulty oil pressure sensor
  • Oil Pressure Sensor harness is open or shorted
  • Oil Pressure Sensor circuit poor electrical connection
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How to Fix the DTC P0521 Mercedes-Benz?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0521 Mercedes-Benz code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

When is the Code Detected?

The P0521 is detected when the signal sent from oil pressure sensor to PCM goes out of range.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Oil pressure warning light ON.

Code P0521 Mercedes-Benz Description

The PCM continuously monitors the engine oil pressure. The Oil Pressure Sensor/Switch sends a signal to the PCM when the engine is running.

OBDII Code P0521 Mercedes-Benz - Engine Oil Pressure Sensor/Switch Circuit Range/Performance - AutoCodes.com
P0521 Mercedes-Benz Code - Engine Oil Pressure Sensor/Switch Circuit Range/Performance

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