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Engine Fault Code P2320

Ignition Coil G Secondary Circuit

Care Engine Code Reader
The Engine Fault Code P2320 refers to a problem with the ignition coil`s secondary circuit. This code typically means that there is an issue with the ignition coil for cylinder G, which can lead to poor engine performance, misfires, or difficulty starting the vehicle.

While the basic meaning of P2320 is similar across many manufacturers, there may be some differences in how it is interpreted or what it specifically points to in various vehicles. Here are some potential variations based on different brands:

1. Porsche: This code might indicate a specific ignition coil failure or a wiring issue in the secondary circuit for one of the cylinders, particularly in models with multiple ignition coils.

2. Mini: Similar to Porsche, it may point to a faulty ignition coil or a problem with the wiring or connectors associated with that coil.

3. Mercedes-Benz: In some models, this code could also relate to a broader issue with the engine management system, including problems with the power supply to the ignition coil.

4. Audi: It may indicate a failure in the ignition coil for a specific cylinder, but could also involve the engine control unit (ECU) if the coil is not receiving the right signals.

5. Jaguar: The P2320 code could suggest an issue with the ignition system that might also affect other cylinders, leading to misfires or rough idling.

6. Land Rover: Similar to Jaguar, it might indicate a specific coil issue but could also relate to the overall ignition system, including wiring or ECU faults.

In all cases, it`s important to diagnose the issue properly. This can involve checking the ignition coil, wiring, and connectors for damage or wear. If you`re unsure, consulting a professional mechanic or using a diagnostic tool can help pinpoint the exact cause of the code.
Engine Fault Code P2320 refers to an issue with the ignition coil`s secondary circuit, specifically for Ignition Coil G. This code can appear in various European vehicles, and while the core issue remains similar, the exact causes can vary based on the manufacturer. Here are some common causes and manufacturer-specific considerations:

Common Causes:
1. Faulty Ignition Coil: The ignition coil itself may be defective, leading to poor performance or failure to provide a spark.
2. Wiring Issues: Damaged or corroded wiring in the secondary circuit can disrupt the signal from the ignition coil.
3. Poor Connections: Loose or corroded connectors can lead to intermittent signals or complete failure.
4. ECU Problems: The engine control unit (ECU) may have a fault, affecting the ignition coil`s operation.
5. Spark Plug Issues: Worn or damaged spark plugs can cause misfires and trigger this code.
6. Ignition Module Malfunction: If the vehicle has an ignition module, it may be faulty and not providing the correct signals.

Manufacturer-Specific Considerations:

Porsche: In Porsches, especially older models, the issue may be related to the specific ignition system design or age-related wear of components.

Mini: For Mini vehicles, the problem could be linked to the unique wiring harness layout or the use of specific ignition coil designs that may fail more frequently.

Mercedes: In Mercedes models, this code can sometimes be related to the vehicle`s complex electronic systems, which may require specialized diagnostic tools to pinpoint the issue accurately.

Audi: Audi vehicles often have advanced ignition systems, so issues might stem from the vehicle`s onboard computer miscommunicating with the ignition coils.

Jaguar: For Jaguars, the wiring harness is often a culprit due to wear and tear, especially in older models, leading to shorts or breaks in the circuit.

Land Rover: In Land Rovers, the issue may also arise from environmental factors, such as moisture affecting the ignition system, or it could be a result of the vehicle`s off-road capabilities stressing the components.


If you encounter code P2320, it`s essential to inspect the ignition coil, wiring, and connectors first. Using a diagnostic tool can help determine the exact cause and guide you to the right solution. Always refer to the vehicle`s specific service manual for detailed troubleshooting steps.
The P2320 code refers to an issue with the ignition coil G secondary circuit. This can vary based on the vehicle manufacturer, but here are some general steps you can take to diagnose and fix the problem for European cars like Porsche, Mini, Mercedes, Audi, Jaguar, and Land Rover.

General Steps to Fix P2320:

1. Check for Other Codes: Use an OBD-II scanner to check for any additional fault codes. This can help pinpoint the issue.

2. Inspect the Ignition Coil:
– Locate the ignition coil for cylinder G (the specific cylinder may vary by vehicle).
– Check for any visible damage, cracks, or corrosion.

3. Test the Ignition Coil:
– Disconnect the ignition coil connector.
– Use a multimeter to test the resistance of the coil. Compare the readings to the specifications in your vehicle`s service manual. If its out of range, replace the coil.

4. Check Wiring and Connectors:
– Inspect the wiring harness and connectors leading to the ignition coil for any signs of wear, fraying, or corrosion.
– Repair or replace any damaged wiring or connectors.

5. Test the Power and Ground:
– With the ignition on, check for voltage at the ignition coil connector. You should see battery voltage.
– Also, check for a good ground connection. If theres no power or a bad ground, trace the wiring back to the source.

6. Replace the Ignition Coil: If the coil is faulty, replace it with a new one. Make sure to use a part that meets OEM specifications.

7. Clear the Codes: After repairs, clear the fault codes using the OBD-II scanner and take the vehicle for a test drive to see if the code returns.

Manufacturer-Specific Notes:

Porsche: Ensure that you are using the correct ignition coil for your specific model. Porsche often has specific coils for different engines.

Mini: Check for software updates or recalls that might affect the ignition system, as these can sometimes cause issues.

Mercedes: Some models may have a specific wiring harness that can wear out. Inspect this carefully.

Audi: Audi vehicles often have multiple ignition coils. If one fails, its wise to inspect others for similar wear.

Jaguar: Be aware that Jaguar models may have unique ignition coil setups, so refer to the service manual for specifics.

Land Rover: Check for any TSBs (Technical Service Bulletins) related to ignition coils, as these can provide additional guidance.



If youve gone through these steps and the issue persists, it may be best to consult a professional mechanic. They can provide a more in-depth diagnosis and ensure that all potential issues are addressed.
Driving with a P2320 code, which indicates an issue with the ignition coil`s secondary circuit, is generally not safe. This code can be related to problems like a faulty ignition coil, bad spark plugs, or issues with the wiring or connectors. Heres what you should consider for different manufacturers:

1. Porsche: If you have a P2320 code in a Porsche, it usually means you might experience misfires, reduced engine performance, or even damage to the catalytic converter if you continue driving. Its best to address this issue quickly.

2. Mini: For Mini vehicles, this code can lead to rough idling and poor acceleration. Driving with this code can cause further damage, so its advisable to get it checked out soon.

3. Mercedes: In Mercedes cars, a P2320 code can cause engine hesitation and poor fuel efficiency. Continuing to drive could lead to more serious issues, so its wise to fix it promptly.

4. Audi: Audi vehicles with this code may experience misfires and reduced power. Ignoring it could lead to more extensive repairs, so its recommended to have it diagnosed.

5. Jaguar: For Jaguars, a P2320 code often results in engine performance issues. Its best to avoid driving until the problem is resolved to prevent potential damage.

6. Land Rover: In Land Rovers, this code can lead to engine misfires and might affect the vehicles drivability. Its safer to address the issue before driving further.

Our take, while you might be able to drive for a short distance, its not safe or advisable to continue driving with a P2320 code. Its best to have a professional mechanic diagnose and fix the problem as soon as possible to avoid further damage to your vehicle.

OBD Codes Explained

Engine Codes

P is for PowerTrain - Engine and Transmission.

P0 Indicates Generic Powertrain Codes

P0 Codes indicate problems with the powertrain and are common for all vehicles using the OBD-II Standard.

P1 Enhanced Manufacturer Specific Codes

P1 Codes are specific to manufacturers.

Sub-System

The 3rd Digit indicates the Sub-System

1 – Emission Management

2 – Injector Circuit

3 – Ignition

4 – Emission Control

5 – Vehicle Speed and Idle

6 – Computer and Output

7 – Transmission

8 – Transmission

9 – Reserved

0 – Reserved

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