P0685 2010 Honda Accord Code - Engine Control Module Power Relay Control Circuit Open
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
- P0685 2010 Honda Accord indicates Engine Control Module Power Relay Control Circuit Open.
- 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 P0685 2010 Honda Accord Description
What are the Possible Causes of the DTC P0685 2010 Honda Accord?
- 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 P0685 2010 Honda Accord?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0685 2010 Honda Accord 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 P0685 2010 Honda Accord Code
1. What are the common symptoms of OBDII code P0685 in a 2010 Honda Accord?
- Common symptoms include engine stalling, rough idling, and difficulty starting the vehicle.
2. What does the OBDII code P0685 in a 2010 Honda Accord indicate?
- This code indicates a problem with the Engine Control Module Power Relay Control Circuit being open, which can disrupt the power supply to the ECM.
3. What are the possible causes of the Engine Control Module Power Relay Control Circuit Open in a 2010 Honda Accord?
- Possible causes include a faulty power relay, damaged wiring or connectors in the circuit, or a malfunctioning Engine Control Module.
4. How can I diagnose the issue causing OBDII code P0685 in my 2010 Honda Accord?
- Diagnosing the issue involves checking the power relay, inspecting the wiring and connectors for damage, and testing the Engine Control Module for proper functioning.
5. Can I continue driving my 2010 Honda Accord with the P0685 code?
- It is not recommended to continue driving with this code as it can lead to further electrical issues and potential engine problems.
6. What are the repair options for fixing OBDII code P0685 in a 2010 Honda Accord?
- Repair options include replacing the power relay, repairing any damaged wiring or connectors, or replacing the Engine Control Module if necessary.
7. How much does it cost to fix OBDII code P0685 in a 2010 Honda Accord?
- The cost of repairs can vary depending on the extent of the issue, but it may range from a few hundred to a thousand dollars, including parts and labor.
8. Can I reset the OBDII code P0685 in my 2010 Honda Accord using a diagnostic tool?
- Yes, you can reset the code using a diagnostic tool, but it is important to address the underlying issue causing the code to prevent it from coming back.
9. Are there any preventive measures to avoid OBDII code P0685 in a 2010 Honda Accord?
- Regularly inspecting the electrical components, such as relays and wiring, can help prevent issues that may trigger this code.
10. Will OBDII code P0685 cause my 2010 Honda Accord to fail an emissions test?
- Yes, the presence of this code may cause your vehicle to fail an emissions test, as it indicates a problem with the engine control system.
Discuss the causes and fixes for P0685 2010 Honda Accord OBDII Code
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The code is the same for the Honda Civic. Mase sure the battery connections are clean and firmly tight, and that the alternator it charging.
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hi can i know what is the faulty where engine start up at cold temperature it will vibrate and after engine warm it run normal. what is the cause and any part or sensor faulty? this faulty at my friend honda civic FD
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Unfortunately there are many things that could cause that problem. I suggest by performing a compression test. You may have a blown head gasket.
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Where can I find the ecm wiring harness relay on my 2010 Accord LX 2.4
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