AutoCodes – GMC – P0690 2017 GMC Sierra

P0690 2017 GMC Sierra Code - Electronic Control Module Power Relay Sense Circuit High

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: P0690 2017 GMC Sierra indicates Electronic Control Module Power Relay Sense Circuit High.
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 247

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 P0690 2017 GMC Sierra 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 P0690 2017 GMC Sierra - Electronic Control Module Power Relay Sense Circuit High - AutoCodes.com — P0690 2017 GMC Sierra Code - Electronic Control Module Power Relay Sense Circuit High

What does this mean?

What are the Possible Causes of the DTC P0690 2017 GMC Sierra?

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 P0690 2017 GMC Sierra?

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 P0690 2017 GMC Sierra 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 P0690 2017 GMC Sierra code?

Need more information on how to fix the P0690 2017 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P0690 2017 GMC Sierra Code

1. What are the common symptoms of OBDII code P0690 in a 2017 GMC Sierra?

- Common symptoms include the Check Engine light illuminating, engine stalling, poor vehicle performance, or difficulty starting the vehicle.

2. What does the OBDII code P0690 for Electronic Control Module Power Relay Sense Circuit High mean in a 2017 GMC Sierra?

- This code indicates a high voltage condition in the power relay sense circuit of the Electronic Control Module (ECM) in the vehicle.

3. What are the possible causes of OBDII code P0690 in a 2017 GMC Sierra?

- The code P0690 can be triggered by issues such as a faulty power relay, damaged wiring or connectors in the ECM circuit, or a malfunctioning ECM itself.

4. How can I diagnose the OBDII code P0690 in my 2017 GMC Sierra?

- Diagnosing this code typically involves using a diagnostic scanner to retrieve the code, checking the power relay and related circuits for faults, and inspecting the ECM for any signs of damage.

5. Can I still drive my 2017 GMC Sierra with OBDII code P0690 present?

- It is not recommended to continue driving the vehicle with this code active, as it can lead to potential engine performance issues or stalling, risking safety and further damage.

6. How can I repair OBDII code P0690 in my 2017 GMC Sierra?

- Repairing this code may involve replacing a faulty power relay, repairing damaged wiring or connectors, or replacing the ECM if diagnosed as the root cause of the issue.

7. Is it possible to reset the OBDII code P0690 in a 2017 GMC Sierra without fixing the underlying issue?

- While clearing the code with a diagnostic scanner is possible, it is crucial to address the root cause of the problem to prevent the code from reoccurring.

8. Are there any DIY tips for troubleshooting OBDII code P0690 in a 2017 GMC Sierra?

- DIY tips may include visually inspecting the power relay and related wiring for any visible damage, checking for loose connections, and ensuring proper ECM function.

9. How much does it cost to fix OBDII code P0690 in a 2017 GMC Sierra at a repair shop?

- The cost of fixing this code can vary depending on the specific cause of the issue, but it may include parts and labor costs ranging from $150 to $500 or more.

10. Can a mechanic help me with diagnosing and repairing OBDII code P0690 in my 2017 GMC Sierra?

- Yes, a qualified mechanic or automotive technician can assist in diagnosing and repairing OBDII code P0690 to ensure proper troubleshooting and resolution of the issue.