AutoCodes – Generic – C0693

C0693 Code - Damper Control Relay Circuit High

Quick Answer

Battery voltage for the strut actuators is supplied to the Electronic Suspension Control (ESC) module through the damper drive relay circuit. Common causes include Faulty Damper Control Relay, Damper Control Relay harness is open or shorted, Damper Control Relay circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: C0693 indicates Damper Control Relay Circuit High.
Common causes: Common causes include Faulty Damper Control Relay, Damper Control Relay harness is open or shorted, Damper Control Relay circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 1,077

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 31, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0693 Description

Battery voltage for the strut actuators is supplied to the Electronic Suspension Control (ESC) module through the damper drive relay circuit. The ESC module energizes the damper relay by opening and closing an internal ground for the damping relay coil control circuit. The ESC module monitors the damper drive relay circuit and each strut actuator high-side and low-side drive circuits for fault conditions.

OBDII Code C0693 - Damper Control Relay Circuit High - AutoCodes.com — C0693 Code - Damper Control Relay Circuit High

What does this mean?

What are the Possible Causes of the DTC C0693?

Faulty Damper Control Relay
Damper Control Relay harness is open or shorted
Damper Control Relay circuit poor electrical connection

How to Fix the DTC C0693?

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C0693 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the C0693 code?

Need more information on how to fix the C0693 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C0693 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C0693 Buick — Damper Control Relay Circuit High
C0693 Cadillac — Damper Control Relay Circuit High
C0693 Chevrolet — Damper Control Relay Circuit High
C0693 GMC — Damper Control Relay Circuit High

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C0693 Code

1. What are the common symptoms of OBDII code C0693 (Damper Control Relay Circuit High)?

The common symptoms of OBDII code C0693 include issues with the HVAC system, such as inconsistent temperature control or the inability to adjust air flow.

2. What are the possible causes of OBDII code C0693?

The possible causes of OBDII code C0693 (Damper Control Relay Circuit High) may include a faulty damper control relay, wiring issues, or a malfunctioning HVAC control module.

3. How can I diagnose OBDII code C0693?

Diagnosing OBDII code C0693 typically involves using a diagnostic scanner to retrieve the code, inspecting the damper control relay, checking the wiring for any damage, and testing the HVAC system components.

4. Can a DIYer repair OBDII code C0693 at home?

While some DIYers may be able to address OBDII code C0693 by replacing the damper control relay or repairing wiring issues, it is recommended to consult with a professional mechanic for accurate diagnosis and repair.

5. Is it safe to continue driving with OBDII code C0693 present?

It is generally not recommended to continue driving with OBDII code C0693 present, as it can lead to further damage to the HVAC system and affect the overall comfort and functionality of the vehicle.

6. How much does it typically cost to repair OBDII code C0693?

The cost of repairing OBDII code C0693 can vary depending on the underlying cause, but it may involve the cost of parts such as a damper control relay and the labor fees for diagnosis and repair.

7. Can OBDII code C0693 be triggered by a loose electrical connection?

Yes, OBDII code C0693 (Damper Control Relay Circuit High) can be triggered by a loose electrical connection or poor wiring connections that disrupt the proper function of the damper control relay.

8. What are some preventive maintenance tips to avoid OBDII code C0693 in the future?

To prevent OBDII code C0693 from occurring in the future, it is advisable to regularly inspect the HVAC system components, including the damper control relay, and address any issues promptly to ensure proper functionality.

9. Will resetting the OBDII system clear OBDII code C0693?

Resetting the OBDII system may temporarily clear OBDII code C0693, but if the underlying issue is not addressed, the code is likely to reappear once the system detects the fault again.

10. Can extreme weather conditions contribute to triggering OBDII code C0693?

Yes, extreme weather conditions such as excessive heat or cold can potentially contribute to triggering OBDII code C0693 by putting additional stress on the HVAC system components.