P0690 2014 GMC Sierra Code - Electronic Control Module Power Relay Sense Circuit High
Quick Answer
The P0690 diagnostic trouble code (DTC) for a 2014 GMC Sierra relates to the Electronic Control Module (ECM) Power Relay Sense Circuit High. Common causes include Faulty ECM power relay, Damaged wiring or connectors in the power relay sense circuit, Malfunctioning ECM. 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 2014 GMC Sierra indicates Electronic Control Module Power Relay Sense Circuit High.
- Common causes
- Common causes include Faulty ECM power relay, Damaged wiring or connectors in the power relay sense circuit, Malfunctioning ECM.
- 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 2014 GMC Sierra Description
The P0690 diagnostic trouble code (DTC) for a 2014 GMC Sierra relates to the Electronic Control Module (ECM) Power Relay Sense Circuit High. The ECM power relay is responsible for supplying power to the ECM, which is the brain of the vehicle's engine control system. This code indicates that the ECM is detecting a higher than normal voltage in the power relay sense circuit. This issue can lead to a variety of problems with the vehicle's engine performance and overall operation.
Common Causes of P0690 2014 GMC Sierra
- Faulty ECM power relay
- Damaged wiring or connectors in the power relay sense circuit
- Malfunctioning ECM
- Short circuit in the power relay sense circuit
Symptoms of P0690 2014 GMC Sierra
- Engine stalling or rough idling
- Poor acceleration and reduced engine performance
- Trouble starting the vehicle
- Check Engine Light illuminated on the dashboard
How to Fix P0690 2014 GMC Sierra
- Diagnose the issue using a scan tool to retrieve the trouble code and perform voltage tests on the power relay sense circuit.
- Inspect the ECM power relay and wiring for any signs of damage or corrosion. Replace any faulty components.
- Check the ECM for proper operation and replace if necessary.
- Clear the trouble code from the ECM memory and perform a road test to ensure the issue has been resolved.
- If the code persists, further diagnosis may be required to identify any underlying issues causing the high voltage condition.
Cost to Fix P0690 2014 GMC Sierra
The typical repair costs for addressing the P0690 code on a 2014 GMC Sierra can vary depending on the specific cause of the issue. In general, you can expect to pay anywhere from $150 to $500 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can fluctuate based on location, vehicle make and model, and engine type. It's advisable to inquire about local rates to get a more accurate estimate for your particular situation.
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Frequently Asked Questions about P0690 2014 GMC Sierra Code
1. What does the OBDII code P0690 mean on a 2014 GMC Sierra?
P0690 indicates a problem with the Electronic Control Module (ECM) Power Relay Sense Circuit being stuck at a high voltage level, suggesting an electrical issue.
2. What are the common symptoms of code P0690 in a 2014 GMC Sierra?
Symptoms may include difficulty starting, engine stalling, reduced performance, check engine light illumination, or failure of certain electrical components.
3. What causes the P0690 code to appear on a GMC Sierra?
Common causes include a faulty ECM power relay, damaged wiring or connectors in the relay circuit, a failed ECM, or a blown fuse.
4. Can a bad battery cause the P0690 code?
Yes, a weak or failing battery can cause voltage irregularities that may trigger the P0690 code.
5. How do you diagnose the P0690 code on a 2014 GMC Sierra?
Diagnosis typically involves checking the ECM power relay, inspecting wiring and connectors for damage, testing the battery and fuses, and using a multimeter to measure circuit voltage.
6. Can I drive my 2014 GMC Sierra with the P0690 code?
It’s not recommended to drive with this code present, as it could lead to stalling or additional electrical issues that may leave you stranded.
7. How is the P0690 code fixed on a GMC Sierra?
Repairs may include replacing the ECM power relay, repairing or replacing damaged wiring or connectors, replacing a blown fuse, or, in rare cases, replacing the ECM.
8. How much does it cost to repair the P0690 code on a 2014 GMC Sierra?
Repair costs vary depending on the issue but can range from $50-$200 for a relay or wiring fix, and significantly more if the ECM needs replacement.
9. Can a bad ECM cause the P0690 code?
Yes, a failing ECM can cause this code, but it is typically diagnosed after ruling out simpler issues like the relay or wiring problems.
10. How do I prevent the P0690 code from recurring in my GMC Sierra?
Regularly inspect and maintain your vehicle's electrical system, ensure connections are clean and secure, and replace relays or fuses at the first sign of wear.
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