C0690 GMC Code - Damper Control Relay Circuit Malfunction
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
- C0690 GMC indicates Damper Control Relay Circuit Malfunction.
- 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.
Code C0690 GMC Description
What are the Possible Causes of the DTC C0690 GMC?
- Faulty Damper Control Relay
- Damper Control Relay harness is open or shorted
- Damper Control Relay circuit poor electrical connection
How to Fix the DTC C0690 GMC?
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 C0690 GMC 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.
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Frequently Asked Questions about C0690 GMC Code
1. What are the common symptoms of OBDII code C0690 GMC (Damper Control Relay Circuit Malfunction)?
- Common symptoms include issues with temperature control in the HVAC system, unusual noises coming from the HVAC system, and the HVAC system not responding properly to temperature adjustments.
2. What are the possible causes of OBDII code C0690 GMC?
- The code C0690 GMC can be caused by a faulty damper control relay, wiring issues in the circuit, a malfunctioning HVAC control module, or a defective HVAC actuator.
3. How can I diagnose the cause of OBDII code C0690 GMC?
- To diagnose the cause of the code C0690 GMC, it is recommended to perform a thorough inspection of the damper control relay, check the wiring for any damage or loose connections, test the HVAC control module, and verify the operation of the HVAC actuator.
4. Can I continue driving my vehicle with OBDII code C0690 GMC?
- It is not recommended to continue driving the vehicle with the code C0690 GMC, as it can affect the proper functioning of the HVAC system, leading to discomfort and potential issues with defrosting the windshield.
5. How can I repair OBDII code C0690 GMC?
- The repair for code C0690 GMC typically involves replacing the faulty damper control relay, repairing any damaged wiring in the circuit, recalibrating the HVAC system, or replacing the HVAC control module or actuator if necessary.
6. Will resetting the OBDII code C0690 GMC make it go away permanently?
- Resetting the code C0690 GMC may temporarily clear the error code, but if the underlying issue is not addressed and repaired, the code is likely to reappear once the system detects the malfunction again.
7. Are there any DIY repair tips for OBDII code C0690 GMC?
- DIY repair tips for the code C0690 GMC include checking and securing any loose wiring connections, inspecting the damper control relay for visible damage, and ensuring the HVAC system is free from obstructions that could affect its operation.
8. Is OBDII code C0690 GMC a common issue in GMC vehicles?
- While the code C0690 GMC (Damper Control Relay Circuit Malfunction) is not as common as some other OBDII codes, it can still occur in GMC vehicles, particularly in older models or those with high mileage.
9. Can extreme weather conditions contribute to triggering OBDII code C0690 GMC?
- Extreme weather conditions such as very high or very low temperatures can potentially exacerbate issues related to the damper control relay circuit, leading to the triggering of code C0690 GMC in some cases.
10. How much can I expect to pay for professional repairs related to OBDII code C0690 GMC?
- The cost of professional repairs for OBDII code C0690 GMC can vary depending on the specific cause of the issue, but it may range from $150 to $500 or more, including parts and labor.
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