The Engine Fault Code P0672 refers to a problem with the glow plug circuit for cylinder 2 in a diesel engine. Glow plugs are used to heat the air in the combustion chamber, making it easier for the engine to start, especially in cold weather. When the code appears, it means theres an issue with the glow plug itself, the wiring, or the control module that manages the glow plug system.
Possible Causes for P0672:
1. Faulty Glow Plug: The glow plug for cylinder 2 may be burned out or malfunctioning.
2. Wiring Issues: There could be damaged or corroded wires in the circuit leading to the glow plug.
3. Faulty Glow Plug Relay: The relay that controls power to the glow plugs may be defective.
4. Control Module Issues: The engine control module (ECM) might have a fault affecting the glow plug circuit.
5. Poor Ground Connection: A bad ground connection can also lead to this code.
Alternative Meanings by Manufacturer:
While P0672 generally means the same thing across most manufacturers, some specific brands might have slight variations in their diagnostics. Here are a few examples:
– Volkswagen/Audi: In some cases, the code might also indicate a problem with the glow plug control module itself.
– Mercedes-Benz: They may have additional codes related to glow plug issues, but P0672 will still refer to cylinder 2.
– Jaguar/Land Rover: Similar to Mercedes, they may have a more complex glow plug system that can lead to additional codes being thrown alongside P0672.
What to Do Next:
1. Visual Inspection: Check the glow plug and wiring for any visible damage.
2. Test the Glow Plug: Use a multimeter to test the resistance of the glow plug.
3. Check the Relay: Test the glow plug relay to ensure its functioning properly.
4. Scan for Additional Codes: Use an OBD-II scanner to see if there are other codes present that may help diagnose the issue.
If you`re not comfortable diagnosing or fixing the issue yourself, it might be best to take the vehicle to a professional mechanic.
The Engine Fault Code P0672 indicates a problem with the glow plug circuit for cylinder 2. This code typically appears in diesel engines, which use glow plugs to help start the engine in cold conditions. Here are some common causes for this code:
1. Faulty Glow Plug: The glow plug for cylinder 2 might be burned out or damaged, preventing it from heating properly.
2. Open Circuit: There could be a break in the wiring or a poor connection in the circuit leading to the glow plug. This means the electrical signal cant reach the glow plug.
3. Faulty Glow Plug Relay: The relay that controls the glow plug circuit may be malfunctioning, which can prevent the glow plug from receiving power.
4. ECU Issues: The Engine Control Unit (ECU) may have a fault, which can lead to incorrect readings or commands for the glow plug circuit.
5. Corrosion or Damage: Corrosion at the connectors or damage to the wiring harness can disrupt the electrical flow to the glow plug.
6. Faulty Engine Coolant Temperature Sensor: If this sensor is not working correctly, it may send incorrect signals to the ECU, affecting the glow plug operation.
Manufacturer Differences:
– Volkswagen/Audi: They often have similar issues due to shared components. Check for specific wiring harness issues.
– Mercedes: Mercedes vehicles might have more complex glow plug control modules that can fail, leading to this code.
– Porsche: If applicable, check for specific glow plug designs as they can vary by model.
– Mini: Being a BMW product, it may share some components with BMW diesel engines, so look for similar wiring issues.
– Jaguar/Land Rover: These vehicles might have more sophisticated glow plug management systems, so ensure to check for software updates or specific relay issues.
If you encounter P0672, start by checking the glow plug itself and the wiring. If those are fine, move on to the relay and ECU. Always refer to the specific service manual for your vehicle for detailed troubleshooting steps.
The engine fault code P0672 indicates that there is a problem with the glow plug circuit for cylinder 2. This code is common in diesel engines, especially in vehicles from manufacturers like Porsche, Mini, Mercedes, Audi, Jaguar, and Land Rover. Heres a step-by-step guide to help you fix this issue:
Step 1: Gather Tools and Supplies
– Multimeter
– Socket set
– Wrench set
– Replacement glow plug (if needed)
– Wiring diagram for your specific vehicle
– Electrical cleaner
Step 2: Safety First
– Make sure the engine is off and cool.
– Disconnect the battery to avoid any electrical shocks.
Step 3: Locate the Glow Plugs
– Find the glow plug rail, usually located on top of the engine near the injectors. Refer to your vehicle`s manual for the exact location.
Step 4: Inspect the Glow Plug
1. Visual Inspection: Check for any visible damage to the glow plug or its wiring.
2. Test the Glow Plug: Use a multimeter to test the resistance of the glow plug. A good glow plug should have a resistance of about 0.5 to 2 ohms. If it reads infinite resistance, its faulty and should be replaced.
Step 5: Check the Wiring
– Inspect the wiring connected to the glow plug for breaks or corrosion. Clean any corrosion with electrical cleaner.
– Use the multimeter to check for continuity in the wiring. If there is an open circuit, you may need to repair or replace the wiring.
Step 6: Test the Glow Plug Relay
– The glow plug relay controls the power to the glow plugs. Locate the relay in the fuse box or near the engine.
– Test the relay with a multimeter to ensure it is functioning correctly. If its faulty, replace it.
Step 7: Clear the Code
– Once repairs are made, reconnect the battery and use an OBD-II scanner to clear the fault code.
– Start the engine and check if the code returns.
Step 8: Test Drive
– Take the vehicle for a short drive to ensure everything is working correctly.
Manufacturer-Specific Notes
– Porsche: Often uses advanced diagnostic tools; consider a professional scan tool for accurate readings.
– Mini: Check for software updates that may affect the glow plug system.
– Mercedes: Some models may have multiple glow plug circuits; ensure you are testing the correct one.
– Audi: Audi models may require specific procedures for glow plug replacement; consult the manual.
– Jaguar: Jaguars might have a more complex wiring harness; inspect thoroughly for hidden issues.
– Land Rover: Look for common issues with the engine control module (ECM) that may affect glow plug operation.
If you follow these steps and still have issues, it may be best to consult a professional mechanic, especially for more complex electrical problems.
Driving with a P0672 code, which indicates a problem with the glow plug circuit for cylinder 2, is generally not safe, especially in diesel vehicles. Heres a breakdown based on different manufacturers:
1. Porsche: If you have a diesel Porsche, this code could lead to starting issues in cold weather. It`s best to fix it before driving.
2. Mini: For diesel Minis, a P0672 code could cause rough idling and difficulty starting. It`s advisable to address this issue soon.
3. Mercedes: In diesel Mercedes models, this code can affect cold starts and engine performance. Driving with this code can lead to more extensive engine issues, so repairs are recommended.
4. Audi: Similar to Mercedes, a P0672 code in diesel Audis can lead to starting problems and decreased performance. It`s best to have it checked.
5. Jaguar: If your Jaguar is diesel, a P0672 code can cause starting difficulties and rough running. Its wise to get it fixed to avoid further complications.
6. Land Rover: In diesel Land Rovers, this code may lead to cold start issues and rough engine performance. Its safer to resolve this issue before driving.
Our take, if your vehicle is diesel, it`s best to get the glow plug issue fixed before driving. If it`s a gasoline engine, this code may not apply, but it`s still a good idea to check for any related issues. Always consult your vehicle`s manual or a professional mechanic for specific advice.
