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AutoCodes - Generic - C1751

C1751 Code - Continuous Electric Current To Height Control Compressor

- Code Popularity: 14,048 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC C1751?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Height Control Compressor
  • Height Control Compressor harness is open or shorted
  • Height Control Compressor circuit poor electrical connection
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How to Fix the DTC C1751?

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 C1751 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.

What are Code Possible Symptoms?

  • Anti-Lock Brake System (ABS) Warning Light ON
  • Engine Light ON (or Service Engine Soon Warning Light)

Code C1751 Description

If the vehicle height control is attempted on a steeply sloping road, when the vehicle is overloaded, or when the vehicle is jacked up with the engine running, the compressor motor operates continuously to raise vehicle height, and causes electric current to flow to the AIR SUS relay for 100 seconds or longer. Thus DTC C1751/51 may be output and vehicle height control may be suspended. (This is not electrically abnormal.) In this case, however, the vehicle height operation is resumed approx. 10 min. after the ignition switch is turned ON after the ECU detects the first error. If ECU detects another error, it takes 70 minutes until control is resumed.

OBDII Code C1751 - Continuous Electric Current To Height Control Compressor - AutoCodes.com
C1751 Code - Continuous Electric Current To Height Control Compressor

Need More Information on the Code?

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Information for Specific Makes

  • C1751 Lexus Continuous Electric Current To Height Control Compressor
  • C1751 Toyota Continuous Electric Current To Height Control Compressor

Need Help with the Code?

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Code C1751 comments

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