AutoCodes – Chevrolet – P0689 2017 Chevrolet Silverado

P0689 2017 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 2017 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 263

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 2017 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 2017 Chevrolet Silverado - Electronic Control Module Power Relay Sense Circuit Low - AutoCodes.com — P0689 2017 Chevrolet Silverado Code - Electronic Control Module Power Relay Sense Circuit Low

What does this mean?

What are the Possible Causes of the DTC P0689 2017 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 2017 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 2017 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 2017 Chevrolet Silverado code?

Need more information on how to fix the P0689 2017 Chevrolet Silverado 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 P0689 2017 Chevrolet Silverado Code

1. What does the OBDII code P0689 mean for a 2017 Chevrolet Silverado?

P0689 indicates that the Electronic Control Module (ECM) Power Relay Sense Circuit is detecting a voltage lower than the expected range, which can affect the ECM's ability to function properly.

2. What are the common symptoms of code P0689 in a 2017 Chevrolet Silverado?

Common symptoms include difficulty starting the engine, intermittent stalling, poor engine performance, and the Check Engine Light being illuminated.

3. What causes the P0689 code to appear in a 2017 Chevrolet Silverado?

Possible causes include a faulty ECM power relay, damaged wiring or connectors in the ECM power relay circuit, a weak battery, or an issue with the ECM itself.

4. How do I diagnose the cause of a P0689 code in my 2017 Chevrolet Silverado?

Start by checking the battery voltage and the condition of the battery. Inspect the ECM power relay, its wiring, and connectors for damage or corrosion. Use a multimeter to test for proper voltage in the circuit.

5. Can a faulty ECM power relay cause code P0689 in a 2017 Chevrolet Silverado?

Yes, a faulty ECM power relay is a common cause of this code and should be tested and replaced if necessary.

6. Is it safe to drive a 2017 Chevrolet Silverado with the P0689 code?

Driving with this code is not recommended, as it can lead to intermittent stalling or the engine failing to start, which could be dangerous in certain situations.

7. How do I fix the P0689 code on my 2017 Chevrolet Silverado?

Repairs typically involve replacing a faulty ECM power relay, repairing or replacing damaged wiring or connectors, and ensuring the battery and ECM are functioning properly.

8. How much does it cost to fix code P0689 on a 2017 Chevrolet Silverado?

Repair costs can vary. Replacing the ECM power relay typically costs $50 to $100 for parts, plus labor. If wiring repairs or ECM replacement are needed, costs will be higher.

9. Can a weak battery trigger the P0689 code in a 2017 Chevrolet Silverado?

Yes, a weak or failing battery can cause low voltage in the ECM power relay sense circuit, triggering the P0689 code.

10. Do I need to reprogram the ECM after fixing code P0689 on my 2017 Chevrolet Silverado?

Reprogramming the ECM is generally not required unless the ECM itself is replaced. After repairs, clear the code and test the system to ensure the issue is resolved.