P0690 2015 GMC Sierra Code - Electronic Control Module Power Relay Sense Circuit High
Quick Answer
The P0690 code for a 2015 GMC Sierra indicates a problem with the Electronic Control Module (ECM) power relay sense circuit being too high. Common causes include Faulty ECM power relay, Wiring or connection issues in the power relay sense circuit, Corrosion or damage to the power relay or its connections. 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 2015 GMC Sierra indicates Electronic Control Module Power Relay Sense Circuit High.
- Common causes
- Common causes include Faulty ECM power relay, Wiring or connection issues in the power relay sense circuit, Corrosion or damage to the power relay or its connections.
- 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 P0690 2015 GMC Sierra Description
The P0690 code for a 2015 GMC Sierra indicates a problem with the Electronic Control Module (ECM) power relay sense circuit being too high. The ECM power relay is responsible for supplying power to the ECM, which controls various functions in the vehicle, including engine performance, transmission shifting, and emissions control. When the power relay sense circuit is reading too high, it means that there is an issue with the voltage being supplied to the ECM, which can lead to erratic behavior and potential malfunctions in the vehicle's systems.
Common Causes of P0690 2015 GMC Sierra
- Faulty ECM power relay.
- Wiring or connection issues in the power relay sense circuit.
- Corrosion or damage to the power relay or its connections.
- ECM software or hardware malfunction.
- Electrical system issues, such as a short circuit or voltage spikes.
Symptoms of P0690 2015 GMC Sierra
- Check engine light illuminated on the dashboard.
- Engine running rough or stalling.
- Loss of power or acceleration.
- Difficulty starting the vehicle.
- Poor fuel efficiency.
How to Fix P0690 2015 GMC Sierra
- Diagnose the problem by using a scan tool to read the fault codes and perform a thorough inspection of the power relay and associated wiring.
- Test the power relay and connections for proper voltage and continuity.
- Replace the ECM power relay if it is found to be faulty.
- Repair or replace any damaged wiring or connections in the power relay sense circuit.
- Clear the fault codes and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0690 2015 GMC Sierra
The typical repair costs for addressing a P0690 code on a 2015 GMC Sierra can range from $100 to $300, including parts and labor. However, the actual cost may vary depending on the specific diagnosis time and labor rates at auto repair shops. It's recommended to consult with a professional mechanic to get a more accurate estimate based on your location and vehicle specifics.
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Frequently Asked Questions about P0690 2015 GMC Sierra Code
1. What does the OBDII code P0690 mean on a 2015 GMC Sierra?
P0690 indicates an issue with the Electronic Control Module (ECM) Power Relay Sense Circuit, specifically that the voltage is too high.
2. What are the common symptoms of code P0690 in a 2015 GMC Sierra?
Common symptoms include the engine not starting, stalling while driving, a no-crank condition, or the Check Engine Light illuminating.
3. What causes the P0690 code to appear on a 2015 GMC Sierra?
Possible causes include a faulty ECM power relay, shorted wiring or connectors in the relay circuit, a defective ECM, or a blown fuse.
4. Can I drive my 2015 GMC Sierra with a P0690 code?
It’s not recommended, as the vehicle may experience stalling or fail to start, which could leave you stranded or create unsafe driving conditions.
5. How is the P0690 code diagnosed on a 2015 GMC Sierra?
A mechanic will typically check the power relay, inspect associated wiring and connectors, test the ECM, and use a multimeter to measure circuit voltage.
6. How do you fix a P0690 code on a 2015 GMC Sierra?
Repairs may include replacing the ECM power relay, repairing or replacing damaged wiring, clearing blockages in the circuit, or replacing the ECM if necessary.
7. How much does it cost to repair a P0690 code on a 2015 GMC Sierra?
Repair costs vary but typically range from $100 to $500, depending on whether the issue is with the relay, wiring, or ECM itself.
8. Can a dead battery cause the P0690 code on a 2015 GMC Sierra?
A dead or weak battery is not a direct cause but can exacerbate electrical issues, so it’s important to ensure the battery is in good condition.
9. Will clearing the code fix the P0690 issue on a 2015 GMC Sierra?
Clearing the code will reset the Check Engine Light temporarily, but the issue will return if the underlying problem isn’t resolved.
10. How can I prevent the P0690 code from recurring in my 2015 GMC Sierra?
Regularly inspect and maintain the electrical system, including the ECM power relay and wiring, to ensure they are in good condition.
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