Engine-Codes - Generic - C1820

C1820 Code - Air Suspension RF Air Compress Request Exceeded Max Timing

- Code Popularity: 4,276 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
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What are the Possible Causes of the DTC C1820?

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 Air Suspension Height Sensor
  • Air Suspension Height Sensor harness is open or shorted
  • Air Suspension Height Sensor circuit poor electrical connection
  • Faulty Vehicle Dynamics Module (VDM)
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How to Fix the DTC C1820?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the C1820 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops 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)

What Does the C1820 Code Mean?

The Vehicle Dynamics Module (VDM) monitors the Air Suspension RF Air Compress. The VDM sets the OBDII code when the Air Suspension RF Air Compress is not to factory specifications.

C1820 Code - Air Suspension RF Air Compress Request Exceeded Max Timing

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