The Engine Fault Code P0680 refers to an issue with the glow plug circuit for cylinder 10. Glow plugs are used in diesel engines to help start the engine by heating the air in the combustion chamber. If the circuit is open or there`s a fault, it means that the glow plug isnt functioning properly, which can lead to hard starting or rough running in cold weather.
Possible Causes:
1. Faulty Glow Plug: The glow plug itself may be defective.
2. Wiring Issues: There could be damaged or corroded wires in the glow plug circuit.
3. Faulty Relay: The relay that controls the glow plugs may not be working.
4. ECU Issues: The Engine Control Unit (ECU) might be malfunctioning.
Manufacturer Differences:
While P0680 generally means the same thing across many brands, here are some potential variations in meaning or additional considerations based on different manufacturers:
– Volkswagen/Audi: May also indicate issues with the glow plug control module.
– Mercedes-Benz: Could relate to a specific glow plug for a particular cylinder, especially in V-type engines.
– Jaguar/Land Rover: Might involve additional diagnostics due to the complexity of their diesel engines.
What to Do:
1. Inspect Wiring: Check the wiring and connectors for any damage.
2. Test the Glow Plug: Use a multimeter to test the glow plug`s resistance.
3. Check the Relay: Make sure the relay is functioning properly.
4. Scan for Additional Codes: Look for other trouble codes that may provide more context.
If youre not comfortable diagnosing or repairing the issue, its best to consult a professional mechanic who specializes in European vehicles.
The Engine Fault Code P0680 refers to an issue with the glow plug circuit for cylinder 10. This code is commonly found in diesel engines, where glow plugs are used to help start the engine in cold conditions. Here are some potential causes for this code, which can vary by manufacturer:
1. Faulty Glow Plug: The glow plug itself may be burned out or damaged, preventing it from heating properly.
2. Wiring Issues: There could be damaged or corroded wiring in the glow plug circuit. This includes broken wires, loose connections, or poor grounding.
3. Faulty Glow Plug Relay: The relay that controls power to the glow plugs may be malfunctioning, leading to an open circuit.
4. ECM Issues: The Engine Control Module (ECM) may have a fault or a software issue that is not recognizing the glow plug`s operation correctly.
5. Open Circuit: There may be an open circuit due to a blown fuse or a disconnection somewhere in the circuit.
6. Compatibility Issues: In some vehicles, especially older models, the glow plug circuit might be affected by other systems, such as the fuel system or even the battery condition.
Manufacturer-Specific Notes:
– Volkswagen/Audi: These brands often have more complex glow plug control units. A fault in the control unit can lead to this code being triggered.
– Mercedes-Benz: For Mercedes, the issue might also be tied to the specific engine model, as some engines have multiple glow plugs controlled differently.
– Porsche: If you encounter this code in a Porsche diesel model, the glow plug setup can be similar to Audi`s, so similar troubleshooting applies.
– Jaguar/Land Rover: These vehicles may have integrated systems that affect the glow plugs, so a broader diagnostic check might be necessary.
When diagnosing P0680, it`s essential to check the glow plug itself, the wiring, the relay, and the ECM. Each manufacturer may have specific quirks, so it`s good to consult the service manual or a professional for detailed troubleshooting if you`re unsure.
The P0680 code indicates a problem with the glow plug circuit, specifically for cylinder 10. This code is most commonly found in diesel engines, as glow plugs are used to help start the engine in cold conditions. Heres how to troubleshoot and fix this issue, along with some manufacturer-specific considerations:
General Steps to Fix P0680:
1. Check the Glow Plug:
– Locate cylinder 10`s glow plug. This is typically found on the cylinder head.
– Inspect the glow plug for any visible damage or corrosion.
– Use a multimeter to test the glow plugs resistance. A healthy glow plug usually shows a resistance between 0.5 to 5 ohms. If it shows infinite resistance, its likely faulty and needs replacement.
2. Inspect the Wiring:
– Check the wiring harness connected to the glow plug for any signs of damage, fraying, or corrosion.
– Ensure all connections are secure. A loose or corroded connection can cause an open circuit.
3. Check the Glow Plug Relay:
– The glow plug relay controls power to the glow plugs. If it`s faulty, it may not supply power to the glow plug.
– Test the relay using a multimeter. If its not functioning properly, replace it.
4. Scan for Additional Codes:
– Use an OBD-II scanner to check for any other codes that may indicate related issues. Sometimes, multiple codes can help pinpoint the problem.
5. Clear the Code:
– After making repairs, clear the code using the scanner and take the vehicle for a test drive to see if the code returns.
Manufacturer-Specific Considerations:
– Porsche:
– For Porsche diesel models, ensure that the glow plug control unit is functioning properly. Some models may have a dedicated control module for the glow plugs.
– Mini:
– In Mini vehicles, check if the glow plug circuit shares connections with other systems. Sometimes, issues in the engine management system can affect the glow plug operation.
– Mercedes:
– Mercedes vehicles may have a more complex glow plug control system. Check the glow plug control module (if equipped) for faults. Some models may require a specific sequence to check the glow plugs.
– Audi:
– Audi models may have multiple glow plugs controlled by a single relay. Ensure all related wiring and components are in good condition.
– Jaguar:
– For Jaguar diesel engines, also inspect the engine control module (ECM) for any software updates or faults that could affect glow plug operation.
– Land Rover:
– On Land Rover vehicles, the glow plug system may be integrated with the vehicle`s ECU. Ensure that the ECU is functioning correctly and that there are no other underlying issues.
Final Thoughts:
If youve checked all these components and the code persists, it might be best to consult a professional mechanic or a dealership. They can perform more in-depth diagnostics and repairs, especially if there are unique vehicle-specific issues.
Driving with a P0680 code, which indicates a problem with the glow plug circuit for cylinder 10, can be risky, especially in diesel engines. Heres a breakdown of what it means and how it might affect different manufacturers:
General Information
– Glow Plug Function: Glow plugs help start diesel engines by heating the air in the combustion chamber. If there`s an issue, it could lead to hard starting or poor engine performance.
– Symptoms: You might experience rough idling, difficulty starting, or increased emissions.
Manufacturer-Specific Notes
1. Porsche:
– Caution: If your Porsche has a diesel engine (like the Cayenne Diesel), its important to address this code. You may experience starting issues, especially in cold weather.
2. Mini:
– Caution: If your Mini is diesel, a P0680 code could lead to starting problems. If its a gasoline model, the code may not apply, and its likely safe to drive but should still be checked.
3. Mercedes:
– Caution: In Mercedes diesel models, a P0680 code can affect starting and performance. Its best to get it checked out, especially in colder weather.
4. Audi:
– Caution: Similar to Mercedes, Audi diesel engines may struggle with this code. Its advisable to have it diagnosed to avoid starting issues.
5. Jaguar:
– Caution: For diesel Jaguars, this code should be taken seriously. It could lead to starting difficulties, especially in cold conditions.
6. Land Rover:
– Caution: If your Land Rover has a diesel engine, a P0680 code can lead to poor performance and hard starts. Its best to address it promptly.
Conclusion
Our view, if your vehicle has a diesel engine and shows a P0680 code, its not safe to ignore it. You may face starting issues and performance problems. For gasoline engines, the code may not be relevant, but its still wise to have it checked out. Always consult your vehicles manual or a professional mechanic for specific advice tailored to your car.
