P0685 2011 Ford Fusion Code - Powertrain Control Module Power Relay Control Circuit Open
Quick Answer
The P0685 diagnostic trouble code (DTC) for a 2011 Ford Fusion indicates a problem with the Powertrain Control Module (PCM) Power Relay Control Circuit being open. Common causes include Faulty power relay, Wiring or connection issues in the power relay control circuit, PCM failure. 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 2011 Ford Fusion indicates Powertrain Control Module Power Relay Control Circuit Open.
- Common causes
- Common causes include Faulty power relay, Wiring or connection issues in the power relay control circuit, PCM failure.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P0685 2011 Ford Fusion Description
The P0685 diagnostic trouble code (DTC) for a 2011 Ford Fusion indicates a problem with the Powertrain Control Module (PCM) Power Relay Control Circuit being open. The PCM is a crucial component of the vehicle's engine management system, responsible for controlling various functions such as fuel injection, ignition timing, and emissions. The power relay control circuit is essential for providing power to the PCM, allowing it to function properly.
Common Causes of P0685 2011 Ford Fusion
- Faulty power relay
- Wiring or connection issues in the power relay control circuit
- PCM failure
- Corrosion or damage to electrical connectors
- Electrical system issues such as a blown fuse
Symptoms of P0685 2011 Ford Fusion
- Engine misfires or rough idling
- Difficulty starting the engine
- Reduced fuel efficiency
- Illumination of the Check Engine Light
- Engine stalling or hesitation
How to Fix P0685 2011 Ford Fusion
- Begin by conducting a visual inspection of the power relay and its connections to the PCM.
- Test the power relay using a multimeter to check for proper functionality.
- Inspect the wiring and connectors in the power relay control circuit for any damage or corrosion.
- If necessary, replace the power relay, repair any damaged wiring, or clean and secure any loose connections.
- Clear the DTC with a scan tool and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0685 2011 Ford Fusion
The typical repair costs for addressing a P0685 code on a 2011 Ford Fusion can vary depending on the specific cause of the issue. In general, the cost of replacing a power relay or repairing wiring/connectors can range from $100 to $300, including parts and labor. Additional costs may apply if the PCM needs to be replaced or if other related components require attention. It is advisable to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on the specific circumstances of the vehicle. Keep in mind that labor rates can vary, so it's recommended to inquire about rates in your local area.
Tech Notes for P0685 2011 Ford Fusion
Need more information about the P0685 2011 Ford Fusion code?
Need more information on how to fix the P0685 2011 Ford Fusion code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0685 2011 Ford Fusion code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0685 2011 Ford Fusion Code
What does the OBDII code P0685 mean on a 2011 Ford Fusion?
P0685 indicates an issue with the Powertrain Control Module (PCM) power relay control circuit, specifically that it is open or not functioning properly.
What are the common symptoms of code P0685 in a 2011 Ford Fusion?
Symptoms may include failure to start, engine stalling, no power to the PCM, and the illumination of the check engine light.
What causes the P0685 code to appear on a 2011 Ford Fusion?
Common causes include a faulty PCM power relay, damaged wiring or connectors, a blown fuse, or a malfunctioning PCM.
Can a bad battery cause the P0685 code on a 2011 Ford Fusion?
Yes, a weak or dead battery can contribute to this code by failing to provide sufficient power to the PCM relay and circuit.
How do I diagnose the P0685 code on a 2011 Ford Fusion?
Start by checking the PCM power relay, its wiring and connectors, and the associated fuses. Use a multimeter to test for proper voltage and continuity in the circuit.
Is it safe to drive my 2011 Ford Fusion with the P0685 code?
It is not recommended, as the car may stall unexpectedly or fail to start, potentially leaving you stranded.
How do I fix the P0685 code on a 2011 Ford Fusion?
Repairs may include replacing a faulty PCM power relay, repairing or replacing damaged wiring or connectors, or addressing PCM issues if necessary.
How much does it cost to fix a P0685 code on a 2011 Ford Fusion?
Repair costs can vary, but replacing a PCM power relay typically costs $50–$150, while more extensive wiring or PCM repairs could be higher.
Can I clear the P0685 code without fixing the problem on a 2011 Ford Fusion?
Clearing the code without addressing the root cause may temporarily turn off the check engine light, but the issue will likely return.
Do I need to reprogram the PCM if I replace the faulty relay for P0685 on a 2011 Ford Fusion?
No, replacing the relay itself typically does not require PCM reprogramming. However, ensure the PCM is functioning properly after the repair.
Discuss the causes and fixes for P0685 2011 Ford Fusion OBDII Code
Code P0685 2011 Ford Fusion comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.