P0685 2011 Ford Fusion Code - Powertrain Control Module Power Relay Control Circuit Open
Quick Answer
This DTC sets when the ignition switch position run circuit indicates the ignition is in the OFF, ACC, or LOCK position, and the amount of time the Powertrain Control Module (PCM) remains powered through the PCM power relay exceeds a predetermined amount of time. Common causes include Faulty Powertrain Control Module (PCM) Power Relay, PCM Power Relay harness is open or shorted, PCM 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 2011 Ford Fusion indicates Powertrain Control Module Power Relay Control Circuit Open.
- Common causes
- Common causes include Faulty Powertrain Control Module (PCM) Power Relay, PCM Power Relay harness is open or shorted, PCM 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 2011 Ford Fusion Description
What are the Possible Causes of the DTC P0685 2011 Ford Fusion?
- Faulty Powertrain Control Module (PCM) Power Relay
- PCM Power Relay harness is open or shorted
- PCM Power Relay circuit poor electrical connection
- Blown PCM fuse
- Faulty PCM
How to Fix the DTC P0685 2011 Ford Fusion?
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 2011 Ford Fusion 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 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
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