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P0689 2015 Chevrolet Silverado Code - Electronic Control Module Power Relay Sense Circuit Low

Quick Answer

The P0689 code on a 2015 Chevrolet Silverado indicates an issue with the Electronic Control Module (ECM) Power Relay Sense Circuit being low. Common causes include Faulty ECM power relay, Wiring issues in the power relay sense circuit, Corrosion or poor connections in the circuit. 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
P0689 2015 Chevrolet Silverado indicates Electronic Control Module Power Relay Sense Circuit Low.
Common causes
Common causes include Faulty ECM power relay, Wiring issues in the power relay sense circuit, Corrosion or poor connections in the circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P0689 2015 Chevrolet Silverado Description

The P0689 code on a 2015 Chevrolet Silverado indicates an issue with the Electronic Control Module (ECM) Power Relay Sense Circuit being low. The ECM is a crucial component of the vehicle's engine management system, responsible for controlling various functions such as fuel injection, ignition timing, and emissions. The power relay sense circuit is a part of the ECM that monitors the voltage level of the power relay, ensuring that the ECM is receiving the correct amount of power to function properly.

OBDII Code P0689 2015 Chevrolet Silverado - Electronic Control Module Power Relay Sense Circuit Low
P0689 2015 Chevrolet Silverado Code - Electronic Control Module Power Relay Sense Circuit Low

Common Causes of P0689 2015 Chevrolet Silverado

  1. Faulty ECM power relay
  2. Wiring issues in the power relay sense circuit
  3. Corrosion or poor connections in the circuit
  4. ECM software malfunction
  5. Electrical system issues in the vehicle

Symptoms of P0689 2015 Chevrolet Silverado

  1. Poor fuel efficiency
  2. Rough idling
  3. Hesitation during acceleration
  4. Stalling
  5. Lack of power

How to Fix P0689 2015 Chevrolet Silverado

  1. Begin by performing a thorough inspection of the power relay sense circuit, checking for any loose connections, corrosion, or damaged wiring. Repair or replace any faulty components as necessary.
  2. Test the power relay to ensure it is functioning correctly. Replace the relay if it is found to be faulty.
  3. Check the ECM software for any updates or glitches. Update the software if needed or reset the ECM to clear any error codes.
  4. Clear the P0689 code from the vehicle's memory using an OBD-II scanner.
  5. Test drive the vehicle to ensure that the issue has been resolved and that all symptoms associated with the code have been eliminated.

Cost to Fix P0689 2015 Chevrolet Silverado

The typical repair costs for addressing a P0689 code on a 2015 Chevrolet Silverado can range from $150 to $400, depending on the extent of the issue and the specific repairs needed. This estimate includes the cost of parts such as a new power relay, wiring repairs, and labor charges. It is important to note that actual repair costs can vary based on factors such as location, vehicle make and model, and the rates of individual repair shops. It is recommended to obtain quotes from local auto repair shops to get a more accurate estimate for this repair.

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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 P0689 2015 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P0689 in a 2015 Chevrolet Silverado?

- Common symptoms include the check engine light coming on, engine performance issues, and the vehicle going into a reduced power mode.

2. What does the OBDII code P0689 on a 2015 Chevrolet Silverado indicate?

- This code indicates a problem with the Electronic Control Module (ECM) Power Relay Sense Circuit being too low.

3. What are some possible causes of OBDII code P0689 in a 2015 Chevrolet Silverado?

- Possible causes include a faulty ECM power relay, damaged wiring or connectors in the power relay circuit, or a malfunctioning ECM.

4. How serious is the OBDII code P0689 in a 2015 Chevrolet Silverado?

- This code should be addressed promptly as it can lead to drivability issues and potentially cause further damage to the vehicle's electrical system.

5. How can I diagnose the cause of OBDII code P0689 in my 2015 Chevrolet Silverado?

- Diagnosis typically involves checking the ECM power relay and its circuit for proper functioning, inspecting wiring for damage, and testing the ECM for faults.

6. Can I drive my 2015 Chevrolet Silverado with OBDII code P0689?

- It is not recommended to drive the vehicle with this code present, as it may result in poor engine performance and potential safety hazards.

7. How much does it cost to repair OBDII code P0689 in a 2015 Chevrolet Silverado?

- Repair costs can vary depending on the exact cause of the issue, but they may range from $100 to $300 for parts and labor.

8. Can I reset the OBDII code P0689 in my 2015 Chevrolet Silverado by disconnecting the battery?

- While disconnecting the battery may clear the code temporarily, it is not a permanent solution. The underlying issue causing the code needs to be addressed.

9. Is it possible to prevent OBDII code P0689 from occurring in my 2015 Chevrolet Silverado?

- Regular maintenance and inspections of the vehicle's electrical system can help prevent issues that may trigger this code.

10. Can a DIY enthusiast repair OBDII code P0689 in a 2015 Chevrolet Silverado?

- Depending on their skill level and access to tools, a DIY enthusiast may be able to diagnose and repair this code, but professional help is recommended for complex electrical issues.

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