P0687 Lincoln Code - Engine Control Module Power Relay Control Circuit High
Quick Answer
The Engine Control Module (ECM) monitors the power inputs. Common causes include Faulty Engine Control Module (ECM) power relay, ECM power relay harness is open or shorted, ECM power relay circuit poor electrical connection. 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 Lincoln indicates Engine Control Module Power Relay Control Circuit High.
- Common causes
- Common causes include Faulty Engine Control Module (ECM) power relay, ECM power relay harness is open or shorted, ECM power relay circuit poor electrical connection.
- 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 P0687 Lincoln Description
What are the Possible Causes of the DTC P0687 Lincoln?
- Faulty Engine Control Module (ECM) power relay
- ECM power relay harness is open or shorted
- ECM power relay circuit poor electrical connection
- Faulty ECM
How to Fix the DTC P0687 Lincoln?
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 P0687 Lincoln 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.
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Frequently Asked Questions about P0687 Lincoln Code
1. What are the common symptoms of OBDII code P0687 in a Lincoln vehicle?
- Common symptoms include engine stalling, rough idling, poor acceleration, and the illumination of the Check Engine Light.
2. What can cause the OBDII code P0687 in a Lincoln to trigger?
- The code P0687 is triggered when the Engine Control Module (ECM) detects a high voltage condition in the power relay control circuit.
3. How serious is the OBDII code P0687 in a Lincoln?
- While the vehicle may still operate, it is important to address the issue promptly to prevent potential damage to the ECM or other components.
4. How can I diagnose the cause of OBDII code P0687 in a Lincoln?
- A diagnostic scan tool can help pinpoint the exact cause by reading the code, checking related sensors and circuits, and testing the power relay.
5. What are some possible repair tips for resolving OBDII code P0687 in a Lincoln?
- Inspect and test the power relay, check for loose wiring connections, ensure proper ECM grounding, and replace any faulty components as necessary.
6. Can I drive my Lincoln with the OBDII code P0687 present?
- It is generally not recommended to drive the vehicle with this code present, as it can lead to further electrical issues and potential engine performance problems.
7. Will resetting the OBDII code P0687 in my Lincoln make it go away permanently?
- Simply resetting the code may temporarily turn off the Check Engine Light, but the underlying issue causing the code will likely reoccur if not properly addressed.
8. How much does it typically cost to repair OBDII code P0687 in a Lincoln?
- The cost of repair can vary depending on the specific cause of the code, but it may range from around $100 for a simple relay replacement to several hundred dollars for more extensive repairs.
9. Can a DIY enthusiast fix OBDII code P0687 in a Lincoln themselves?
- Depending on their skill level and access to tools, a DIY enthusiast may be able to address the issue by following repair guides and tutorials, but professional help is recommended for complex cases.
10. Is it necessary to visit a dealership for OBDII code P0687 repairs in a Lincoln?
- While a dealership may have specialized knowledge and parts for Lincoln vehicles, independent repair shops and skilled mechanics can also effectively diagnose and repair this code.
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