AutoCodes – Cadillac – C0691 Cadillac

C0691 Cadillac Code - Damper Control Relay Circuit Range

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: C0691 Cadillac indicates Damper Control Relay Circuit Range.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,361

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code C0691 Cadillac 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 C0691 Cadillac - Damper Control Relay Circuit Range - AutoCodes.com — C0691 Cadillac Code - Damper Control Relay Circuit Range

What does this mean?

What are the Possible Causes of the DTC C0691 Cadillac?

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

How to Fix the DTC C0691 Cadillac?

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 C0691 Cadillac 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 C0691 Cadillac code?

Need more information on how to fix the C0691 Cadillac code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C0691 Cadillac code diagnosed by a professional: Find a repair shop in your area

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 C0691 Cadillac Code

1. What are the common symptoms of OBDII code C0691 in a Cadillac related to the Damper Control Relay Circuit Range?

- Common symptoms include issues with the heating, ventilation, and air conditioning (HVAC) system, such as inconsistent temperature control or lack of response from the climate control.

2. What are the possible causes of OBDII code C0691 in a Cadillac?

- The code C0691 may be triggered by a faulty damper control relay, damaged wiring in the circuit, or a malfunctioning HVAC control module.

3. How can I diagnose the OBDII code C0691 in my Cadillac?

- Diagnosing the code involves using a diagnostic scanner to retrieve the trouble codes, checking the HVAC system for any visible damage or loose connections, and testing the damper control relay for proper functionality.

4. Can I still drive my Cadillac with OBDII code C0691 present?

- It is not recommended to drive your Cadillac with the code C0691 present as it may affect the functioning of the HVAC system, leading to discomfort and potential safety issues while driving.

5. How can I repair OBDII code C0691 related to the Damper Control Relay Circuit Range in my Cadillac?

- Repairing the code typically involves replacing the faulty damper control relay, repairing any damaged wiring in the circuit, and clearing the trouble codes with a diagnostic scanner.

6. Are there any tips to prevent OBDII code C0691 from occurring again in my Cadillac?

- To prevent the code from reoccurring, it is essential to perform regular maintenance on the HVAC system, check for any signs of wiring damage, and address any issues promptly to avoid further damage.

7. How much does it cost to repair OBDII code C0691 in a Cadillac?

- The cost of repairing the code C0691 can vary depending on the extent of the damage, the cost of parts needed, and labor fees. It is recommended to consult a professional mechanic for an accurate estimate.

8. Is it safe to reset the OBDII code C0691 in my Cadillac using a diagnostic scanner?

- Yes, it is safe to reset the code using a diagnostic scanner after the necessary repairs have been made to address the underlying issue triggering the code.

9. Can a DIY enthusiast repair OBDII code C0691 in a Cadillac?

- While some DIY enthusiasts may have the skills to diagnose and repair the code C0691, it is recommended to consult a professional mechanic for accurate diagnosis and proper repair to ensure the issue is resolved correctly.

10. How long does it typically take to repair OBDII code C0691 in a Cadillac?

- The repair time for OBDII code C0691 can vary depending on the complexity of the issue and the availability of parts. In general, it may take a few hours to a full day to diagnose and repair the code successfully.