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P0530 Mercedes-Benz Code - Air Conditioning Refrigerant Pressure Sensor Circuit

- Code Popularity: 4,030 Views
- Repair Importance Level: 1/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P0530 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.
  • A/C system low or over charged with refrigerant
  • Faulty A/C Refrigerant Pressure Sensor
  • Cooling fans in-operative
  • A/C Refrigerant Pressure Sensor harness is open or shorted
  • A/C Refrigerant Pressure Sensor circuit poor electrical connection
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How to Fix the DTC P0530 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.

Search for P0530 Mercedes-Benz Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0530 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 P0530 code is detected when the signal circuit is less than 5 counts (0.09 volt) or more than 250 counts (4.90 volts) and the condition exists for 20 seconds.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • A/C Inoperative
  • A/C Blows Warm

Code P0530 Mercedes-Benz Description

The Powertrain Control Module (PCM) monitors the high side refrigerant pressure via a A/C refrigerant pressure sensor. When the pressure is high the signal voltage is high. When the pressure is low the signal voltage is low. When pressure is high the PCM commands the cooling fans on. When pressure is too high or too low the PCM will not allow the A/C compressor clutch to engage.

OBDII Code P0530 Mercedes-Benz - Air Conditioning Refrigerant Pressure Sensor Circuit - AutoCodes.com
P0530 Mercedes-Benz Code - Air Conditioning Refrigerant Pressure Sensor Circuit

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