AutoCodes – Chevrolet – P0689 2015 Chevrolet Silverado

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

Quick Answer

The powertrain relay is a normally open relay. Common causes include Weak battery, Low voltage while cranking, Faulty Engine Control Module (ECM) power relay. 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 Weak battery, Low voltage while cranking, Faulty Engine Control Module (ECM) power relay.
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 488

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 19, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0689 2015 Chevrolet Silverado Description

The powertrain relay is a normally open relay. The relay armature is held in the open position by spring tension. Battery positive voltage is supplied directly to the relay coil and the armature contact at all times. The Engine Control Module (ECM) supplies the ground path to the relay coil control circuit via an internal integrated circuit called an Output Driver Module (ODM). The ODM output control is configured to operate as a low side driver for the powertrain relay. The ODM for the powertrain relay also incorporates a fault detection circuit, which is continuously monitored by the ECM. When the ECM commands the powertrain relay ON, ignition 1 voltage is supplied to the ECM, and to several additional circuits.

OBDII Code P0689 2015 Chevrolet Silverado - Electronic Control Module Power Relay Sense Circuit Low - AutoCodes.com — P0689 2015 Chevrolet Silverado Code - Electronic Control Module Power Relay Sense Circuit Low

What does this mean?

What are the Possible Causes of the DTC P0689 2015 Chevrolet Silverado?

Weak battery
Low voltage while cranking
Faulty Engine Control Module (ECM) power relay
ECM power relay harness is open or shorted
ECM power relay circuit poor electrical connection
Blown ECM fuse
Faulty ECM

How to Fix the DTC P0689 2015 Chevrolet Silverado?

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 P0689 2015 Chevrolet Silverado 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 P0689 2015 Chevrolet Silverado code?

Need more information on how to fix the P0689 2015 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0689 2015 Chevrolet Silverado 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 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.