P2319: Ignition Coil "G" Primary Control Circuit High

Definition

The OBD2 code P2319 indicates that there is a high voltage detected in the primary control circuit of ignition coil "G," which may suggest a malfunction in the ignition coil or its associated wiring and connectors

Common causes

Faulty ignition coil "G"
Open or shorted wiring in the ignition coil circuit
Poor electrical connections or corroded terminals
Faulty engine control module (ECM)
Failed ignition control module
High resistance in the ignition coil circuit
Faulty power supply to the ignition coil

Common misdiagnoses

Faulty ignition coil
Bad spark plugs
Ignition control module issues
Wiring harness problems
Engine control unit (ECU) malfunction
Fuel injector issues
Vacuum leaks
Crankshaft or camshaft position sensor failure

Troubleshooting steps

1. Check for Additional Codes

Before proceeding, check for any other related trouble codes that may provide more context to the issue
2. Visual Inspection
3. Inspect the wiring and connectors associated with the ignition coil "G" for any signs of damage, corrosion, or loose connections
4. Look for any frayed wires, broken connectors, or signs of overheating
5. Test the Ignition Coil
6. Remove the ignition coil "G" and perform a resistance test using a multimeter. Compare the readings to the specifications provided in the vehicle's service manual
7. If the coil is out of specification, it may need to be replaced
8. Check the Power and Ground
9. Use a multimeter to check for proper voltage at the ignition coil connector. You should see battery voltage when the ignition is on
10. Check the ground connection for the ignition coil. A poor ground can cause high resistance and trigger the code
11. Inspect the PCM (Powertrain Control Module)
12. Ensure that the PCM is functioning correctly. If there are issues with the PCM, it may not be sending the correct signals to the ignition coil
13. Check for any software updates or recalls related to the PCM
14. Test the Ignition Coil Driver Circuit
15. Use a scan tool to monitor the ignition coil driver signal from the PCM. If the signal is not being sent correctly, it may indicate a problem with the PCM or the wiring to the coil
16. Check for Short Circuits
17. Inspect the wiring harness for any short circuits to power or ground that could cause the high voltage reading
18. Replace the Ignition Coil
19. If all tests point to a faulty ignition coil, replace it with a new one and clear the codes
20. Clear Codes and Test Drive
21. After making repairs, clear the trouble codes and take the vehicle for a test drive to see if the code returns
22. Consult a Professional
23. If the issue persists after following these steps, it may be best to consult a professional mechanic for further diagnosis. Always refer to the specific vehicle service manual for detailed procedures and specifications, as they can vary by make and model

Definition

Common causes

Common misdiagnoses

Troubleshooting steps

1. Check for Additional Codes

2. Visual Inspection

3. Inspect the wiring and connectors associated with the ignition coil "G" for any signs of damage, corrosion, or loose connections

4. Look for any frayed wires, broken connectors, or signs of overheating

5. Test the Ignition Coil

6. Remove the ignition coil "G" and perform a resistance test using a multimeter. Compare the readings to the specifications provided in the vehicle's service manual

7. If the coil is out of specification, it may need to be replaced

8. Check the Power and Ground

9. Use a multimeter to check for proper voltage at the ignition coil connector. You should see battery voltage when the ignition is on

10. Check the ground connection for the ignition coil. A poor ground can cause high resistance and trigger the code

11. Inspect the PCM (Powertrain Control Module)

12. Ensure that the PCM is functioning correctly. If there are issues with the PCM, it may not be sending the correct signals to the ignition coil

13. Check for any software updates or recalls related to the PCM

14. Test the Ignition Coil Driver Circuit

15. Use a scan tool to monitor the ignition coil driver signal from the PCM. If the signal is not being sent correctly, it may indicate a problem with the PCM or the wiring to the coil

16. Check for Short Circuits

17. Inspect the wiring harness for any short circuits to power or ground that could cause the high voltage reading

18. Replace the Ignition Coil

19. If all tests point to a faulty ignition coil, replace it with a new one and clear the codes

20. Clear Codes and Test Drive

21. After making repairs, clear the trouble codes and take the vehicle for a test drive to see if the code returns

22. Consult a Professional

23. If the issue persists after following these steps, it may be best to consult a professional mechanic for further diagnosis. Always refer to the specific vehicle service manual for detailed procedures and specifications, as they can vary by make and model