P0687 Pontiac Code - Engine Control Module Power Relay Control Circuit High
Quick Answer
The P0687 diagnostic trouble code (DTC) for Pontiac vehicles indicates a problem with the Engine Control Module (ECM) Power Relay Control Circuit being high. Common causes include Faulty ECM power relay, Damaged wiring or connectors, Blown fuse related to the 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
- P0687 Pontiac indicates Engine Control Module Power Relay Control Circuit High.
- Common causes
- Common causes include Faulty ECM power relay, Damaged wiring or connectors, Blown fuse related to the 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 P0687 Pontiac Description
The P0687 diagnostic trouble code (DTC) for Pontiac vehicles indicates a problem with the Engine Control Module (ECM) Power Relay Control Circuit being high. The ECM Power Relay is responsible for providing power to the ECM, which is crucial for the proper functioning of the engine management system. When this circuit is reading high, it means that there is an issue with the relay or the wiring connected to it, causing a disruption in the power supply to the ECM.
Common Causes of P0687 Pontiac
- Faulty ECM power relay
- Damaged wiring or connectors
- Blown fuse related to the ECM
- Faulty ECM
- Poor electrical connections
Symptoms of P0687 Pontiac
- Engine misfires or runs rough
- Decreased fuel efficiency
- Engine stalling or hesitation
- Check engine light illuminated
- Inability to start the engine
How to Fix P0687 Pontiac
- Diagnose the issue using a diagnostic scanner to confirm the P0687 code and identify the specific cause.
- Inspect the ECM power relay, wiring, and connectors for any visible damage or corrosion.
- Test the ECM power relay using a multimeter to determine if it is functioning correctly.
- Replace the faulty ECM power relay, repair damaged wiring or connectors, and reset the ECM to clear the code.
- Perform a final test drive to ensure that the issue has been resolved and the vehicle is operating properly.
Cost to Fix P0687 Pontiac
The typical repair costs for addressing the P0687 code in a Pontiac vehicle can range from $100 to $300, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that the actual cost may vary based on factors such as the location of the repair shop, the make and model of the vehicle, and the type of engine. Additionally, diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically ranging between $80 and $150. It is advisable to obtain a detailed estimate from a reputable auto repair shop to determine the exact cost of resolving this issue.
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Frequently Asked Questions about P0687 Pontiac Code
1. What are common symptoms of OBDII code P0687 in a Pontiac?
- Common symptoms include engine stalling, rough idling, difficulty starting the vehicle, and illuminated Check Engine Light.
2. What does the OBDII code P0687 in a Pontiac indicate?
- The code indicates a problem with the Engine Control Module (ECM) Power Relay Control Circuit being too high.
3. What are possible causes of the OBDII code P0687 in a Pontiac?
- Possible causes include a faulty ECM power relay, damaged wiring or connectors in the relay circuit, or a malfunctioning ECM.
4. How can I diagnose the cause of OBDII code P0687 in my Pontiac?
- Diagnosis typically involves checking the ECM power relay, inspecting the wiring and connectors for any damage, and testing the ECM for proper functioning.
5. Can I drive my Pontiac with the OBDII code P0687?
- It is not recommended to drive the vehicle with this code present, as it can lead to further damage and potential safety hazards.
6. How can I repair OBDII code P0687 in my Pontiac?
- Repair may involve replacing the ECM power relay, repairing any damaged wiring or connectors, or replacing the ECM if it is found to be faulty.
7. Is it necessary to reset the OBDII code P0687 after repairs?
- Yes, it is important to clear the code using an OBDII scanner after making the necessary repairs to see if the issue has been resolved.
8. Are there any preventive measures to avoid OBDII code P0687 in a Pontiac?
- Regularly inspecting and maintaining the electrical components in the relay circuit can help prevent issues that trigger this code.
9. Can a DIY enthusiast fix OBDII code P0687 in a Pontiac?
- Depending on the level of expertise and access to tools, a DIY enthusiast may be able to diagnose and repair this code, but professional help is recommended for accurate diagnosis and repair.
10. How much does it cost to repair OBDII code P0687 in a Pontiac?
- The cost of repair can vary depending on the specific cause of the issue, but it may range from $100 to $500, including parts and labor.
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