The P2319: Ignition Coil ‘G’ Primary Control Circuit High code indicates that the voltage in the primary control circuit for Ignition Coil ‘G’ is higher than expected. This could be caused by a malfunctioning ignition coil, wiring issues such as a short to power, or problems with the connectors. High voltage in the ignition circuit can lead to misfires, erratic engine performance, or potential damage to the coil and other components.
P2319 – Quick Overview
Code | Information |
---|---|
Meaning | P2319: Ignition Coil ‘G’ Primary Control Circuit High |
Is it serious? | Yes, high voltage in the ignition coil circuit can lead to damage to the ignition coil, spark plugs, and even the ECM. Immediate attention is required to prevent further damage and ensure safe engine operation. |
Possible causes | – High voltage in the ignition coil ‘G’ primary control circuit – Faulty ignition coil or wiring issues – Connector problems |
How to diagnose? | – Measure voltage in the ignition coil ‘G’ primary control circuit – Inspect and test the ignition coil and wiring – Check connectors for faults |
P2319 Meaning
The P2319: Ignition Coil ‘G’ Primary Control Circuit High code means that the ECM has detected a voltage level in the primary circuit of Ignition Coil ‘G’ that is above acceptable limits. This high voltage may be caused by issues such as a defective ignition coil, wiring that has shorted to power, or connector problems that cause improper current flow. High voltage in this circuit can lead to erratic ignition behavior and possible damage to the ignition system components.
Step-by-step diagnostic guide
Action | Description | Tools Needed |
---|---|---|
Check for Other Codes | Use an OBD-II scanner to determine if any other fault codes are present. Related codes can provide more context regarding issues with the ignition or power supply systems. | OBD-II Scanner |
Measure Voltage in Ignition Coil ‘G’ Primary Circuit | Use a multimeter to measure the voltage in the primary control circuit of Ignition Coil ‘G’. Compare the measured value to manufacturer specifications to determine if the voltage is above the acceptable range. | Multimeter |
Inspect Ignition Coil ‘G’ | Visually inspect Ignition Coil ‘G’ for signs of damage such as cracks, burns, or overheating. Physical damage may indicate that the coil is malfunctioning and contributing to the high voltage issue. | Flashlight, Safety Gloves |
Test Ignition Coil ‘G’ | Use an ohmmeter to test the internal resistance of Ignition Coil ‘G’. Compare the resistance measurements with the manufacturer’s specifications to verify that the coil is functioning properly. | Ohmmeter, Coil Tester |
Inspect Wiring Leading to Coil ‘G’ | Inspect the wiring for any damage, such as fraying, melted insulation, or exposed wires. Damaged wiring can cause a short to power, leading to high voltage in the circuit. | Flashlight, Multimeter |
Check Connectors for Faults | Examine the connectors related to Ignition Coil ‘G’. Ensure that the connectors are clean, properly seated, and free from corrosion. Loose or damaged connectors can contribute to voltage spikes. | Connector Cleaner, Flashlight |
Verify Grounding of the Ignition Coil | Ensure that the ignition coil is properly grounded. A poor or loose ground can lead to voltage irregularities, resulting in excessively high voltage levels. Clean and secure all grounding points as needed. | Multimeter, Hand Tools |
Verify Signal from ECM to Ignition Coil | Use a diagnostic tool to monitor the ECM control signal going to Ignition Coil ‘G’. Check for abnormal voltage spikes and ensure the ECM is not sending excessive voltage to the coil. | Diagnostic Tool |
Replace Faulty Components if Necessary | If the ignition coil, connectors, or wiring are found to be defective, replace them with OEM components to ensure proper system functionality and avoid further damage. | Replacement Parts, Hand Tools |
Clear the Code and Test Drive | After performing necessary repairs, clear the P2319 code using an OBD-II scanner. Start the vehicle and take it for a test drive while monitoring ignition performance to confirm the issue has been resolved. | OBD-II Scanner, Vehicle Owner’s Manual |
Recheck for Codes | After the test drive, re-scan the vehicle to ensure that the P2319 code has not returned. If the code persists, further diagnostics may be necessary to investigate deeper ECM or ignition control issues. | OBD-II Scanner |

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Hi, I am Juraj “Yuri” Lukacko. I got frustrated by unhelpful and scammy mechanics, so I decided to learn everything about car diagnostics myself. I test dozens of new car diagnostic tools every month along with learning new strategies to fix and customize cars. About Juraj Lukacko (Yuri)