P0689 2016 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 2016 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.
Code P0689 2016 Chevrolet Silverado Description
What are the Possible Causes of the DTC P0689 2016 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 2016 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 2016 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 2016 Chevrolet Silverado code?
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Frequently Asked Questions about P0689 2016 Chevrolet Silverado Code
1. What does the OBDII code P0689 mean on a 2016 Chevrolet Silverado?
P0689 indicates that the Electronic Control Module (ECM) has detected a low voltage condition in the ECM power relay sense circuit.
2. What are the symptoms of code P0689 in a 2016 Chevy Silverado?
Common symptoms include the engine stalling, failure to start, reduced performance, or the Check Engine Light being illuminated.
3. What causes the P0689 code to appear on a 2016 Chevrolet Silverado?
Possible causes include a faulty ECM power relay, damaged or corroded wiring in the circuit, a bad ECM, or a weak battery.
4. Can a bad battery cause the P0689 code in my 2016 Silverado?
Yes, a weak or failing battery can lead to low voltage in the ECM power relay circuit, triggering the P0689 code.
5. How do I diagnose the P0689 code on a 2016 Chevrolet Silverado?
Start by checking the battery voltage, inspecting the ECM power relay, and examining the wiring and connectors for damage or corrosion. A scan tool can also help monitor circuit voltages.
6. Is it safe to drive my 2016 Chevy Silverado with the P0689 code?
It's not recommended to drive with this code, as it can lead to engine stalling or failure to restart, which could leave you stranded.
7. How do I fix the P0689 code on my 2016 Chevrolet Silverado?
Repairs may include replacing the ECM power relay, repairing damaged wiring, cleaning corroded connections, or replacing the ECM if it's faulty.
8. How much does it cost to fix the P0689 code on a 2016 Silverado?
Repair costs can vary, but replacing an ECM power relay typically costs $50-$100 for parts, while wiring repairs or ECM replacement may be more expensive.
9. Can a faulty ECM cause the P0689 code in my 2016 Silverado?
Yes, a malfunctioning ECM can cause the code by failing to properly sense the power relay circuit voltage.
10. How can I prevent the P0689 code from recurring in my 2016 Chevrolet Silverado?
Regularly inspect and maintain the battery, wiring, and connectors, and address any electrical issues promptly to prevent voltage-related problems.
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