Engine-CodesFord – P0680 Ford

P0680 Ford Code - Cylinder 10 Glow Plug Circuit Fault

Quick Answer

The P0680 code for Ford vehicles indicates a fault in the cylinder 10 glow plug circuit. Common causes include Faulty glow plug in cylinder 10, Wiring issues in the glow plug circuit, Corrosion or poor connection in the wiring harness. 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
P0680 Ford indicates Cylinder 10 Glow Plug Circuit Fault.
Common causes
Common causes include Faulty glow plug in cylinder 10, Wiring issues in the glow plug circuit, Corrosion or poor connection in the wiring harness.
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.
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P0680 Ford Description

The P0680 code for Ford vehicles indicates a fault in the cylinder 10 glow plug circuit. Glow plugs are an essential component in diesel engines, especially during cold starts when the engine needs additional heat to aid combustion. Cylinder 10 refers to the specific cylinder in the engine where the issue is detected.

OBDII Code P0680 Ford - Cylinder 10 Glow Plug Circuit Fault
P0680 Ford Code - Cylinder 10 Glow Plug Circuit Fault

Common Causes of P0680 Ford

  1. Faulty glow plug in cylinder 10
  2. Wiring issues in the glow plug circuit
  3. Corrosion or poor connection in the wiring harness
  4. Faulty glow plug control module
  5. Engine control module (ECM) malfunction

Symptoms of P0680 Ford

  1. Hard starting or extended cranking time
  2. Rough idle or misfires
  3. Decreased fuel efficiency
  4. Check Engine Light illuminated
  5. Engine hesitation or lack of power

How to Fix P0680 Ford

  1. Diagnose the specific issue by using a diagnostic scanner to pinpoint the exact cause of the fault in the glow plug circuit.
  2. Inspect the glow plug in cylinder 10 to determine if it is faulty and needs replacement.
  3. Check the wiring harness and connections for any corrosion, damage, or loose connections. Repair or replace as needed.
  4. Test the glow plug control module and ECM for proper functioning. Replace if necessary.
  5. Clear the diagnostic trouble codes from the ECM and test the vehicle to ensure the issue has been resolved.

Cost to Fix P0680 Ford

The typical repair costs for addressing a cylinder 10 glow plug circuit fault can range from $200 to $500, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check local rates for a more precise estimate. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less.

When is the Code Detected?

The Engine Control Module (ECM) has detected a fault in the cylinder #10 glow plug circuit

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0680 Ford Code

1. What does the OBDII code P0680 mean on a Ford vehicle?

The P0680 code indicates a Cylinder 10 Glow Plug Circuit Fault, meaning there’s an issue in the electrical circuit controlling the glow plug for cylinder 10.

2. What are the common symptoms of the P0680 code in Ford vehicles?

Symptoms include difficulty starting the engine in cold weather, rough idling, reduced fuel efficiency, and the check engine light illuminating.

3. What causes the P0680 code to appear on a Ford?

Common causes include a faulty glow plug, damaged wiring or connectors in the glow plug circuit, a malfunctioning glow plug control module, or corrosion in the electrical connections.

4. How do I diagnose the P0680 code on a Ford vehicle?

Start by inspecting the glow plug for cylinder 10, checking for damage or carbon buildup. Then, test the circuit wiring, connectors, and the glow plug control module for continuity, voltage, or resistance issues.

5. Can a bad glow plug trigger the P0680 code?

Yes, a faulty glow plug can cause the P0680 code by disrupting the proper function of the cylinder 10 glow plug circuit.

6. How serious is the P0680 code on a Ford?

While the code may not immediately affect drivability in mild weather, it can lead to hard starting, poor performance, and potential engine damage in colder conditions.

7. Can I drive my Ford with the P0680 code?

You can drive with this code, but it’s best to address it promptly, especially if you’re in a cold climate where proper glow plug function is essential for starting.

8. How can I fix the P0680 code on my Ford?

Repairs may include replacing the faulty glow plug for cylinder 10, repairing damaged wiring or connectors in the circuit, or replacing the glow plug control module if it’s defective.

9. How much does it cost to repair the P0680 code on a Ford?

Repair costs vary but typically range from $100 to $300, depending on whether you need to replace the glow plug, repair wiring, or replace the glow plug control module.

10. Can a faulty glow plug control module cause the P0680 code?

Yes, a malfunctioning glow plug control module can fail to deliver the correct voltage to the cylinder 10 glow plug, triggering the P0680 code.

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