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AutoCodes - Generic - C1991

C1991 Code - Plant Ride Height Setting And/Or Tests Incomplete

- Code Popularity: 1,349 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 C1991?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Calibrate the ride heights
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How to Fix the DTC C1991?

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 C1991 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 C1991 Description

The Air Suspension Control Module monitors the Plant Ride Height Setting. The Air Suspension Control Module sets the OBDII code when the Plant Ride Height Setting is not to factory specifications.

OBDII Code C1991 - Plant Ride Height Setting And/Or Tests Incomplete - AutoCodes.com
C1991 Code - Plant Ride Height Setting And/Or Tests Incomplete

Need More Information on the Code?

Need more information on how to fix the C1991 code? Get Access to Factory Service Manuals

Information for Specific Makes

  • C1991 Ford Plant Ride Height Setting And/Or Tests Incomplete
  • C1991 Lincoln Plant Ride Height Setting And/Or Tests Incomplete
  • C1991 Mercury Plant Ride Height Setting And/Or Tests Incomplete

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Code C1991 comments

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