P2319 — Ignition Coil "G" Primary Control Circuit High
powertrain (engine/transmission)
Is it safe to drive?
Drive with caution Drive with caution and avoid load. Ignition faults cause misfires that quickly overheat and destroy the catalytic converter; if the Check Engine Light flashes, stop and fix it first.
How to diagnose with an OBD scanner
- Read the code and freeze frame Connect an OBD2 scanner, confirm P2319 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
- Check for companion codes and TSBs Related codes often reveal the real root cause. Also check manufacturer technical service bulletins (TSB) for your make and model — many P0xxx issues have factory fixes or software updates. Search by VIN on the manufacturer site or nhtsa.gov.
- Inspect wiring and connectors Visually inspect the wiring harness and connectors related to the ignition system for damage, corrosion, chafing or poor contact.
- Subsystem check With the ignition coil "G" primary control disconnected, measure signal voltage at the harness connector: a high reading with the component unplugged indicates a short to power in the harness; if it drops to normal, the component itself is faulty.
- Subsystem check Swap the coil to another cylinder and see if the fault code follows it.
- Subsystem check Inspect spark plugs for wear, oil or carbon tracks and check plug gaps.
- Verify the repair Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P2319 does not return.
Approximate repair cost
Repair cost depends on which component actually failed. Typical scenarios for P2319 (parts and labor, USD, independent shop rates): Replace an ignition coil: $150–$380; Repair coil wiring or connector: $80–$250; Replace spark plugs: $90–$250. Overall, fixing P2319 usually costs between $80 and $380. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.
Common questions
What does OBD2 code P2319 mean?
Ignition Coil "G" Primary Control Circuit High (P2319): a powertrain (engine/transmission) fault affecting the ignition system. Short, gentle driving to a shop is usually possible. Most often caused by moisture or oil in the spark plug wells, faulty ignition control circuit in the ECM, worn spark plugs or wrong plug gap.
How much does it cost to fix P2319?
Replace an ignition coil — $150–$380; Repair coil wiring or connector — $80–$250; Replace spark plugs — $90–$250. Exact cost depends on the root cause, your vehicle and local labor rates — a proper diagnosis is the cheapest first step.
Is it safe to drive with P2319?
Drive with caution and avoid load. Ignition faults cause misfires that quickly overheat and destroy the catalytic converter; if the Check Engine Light flashes, stop and fix it first.
Will P2319 clear itself?
Sometimes P2319 clears after a few drive cycles if the fault was intermittent — for example a loose connector or a tank of bad fuel. The underlying cause usually remains, so the code tends to return. Clear it once; if it comes back, diagnose rather than erase it repeatedly.
How do I diagnose P2319 myself?
Start with a scan: confirm P2319, save the freeze frame and note any companion codes. Then inspect the wiring and connectors related to the ignition coil "G" primary control, and verify the suspect component against live data before buying parts.
What does P2319 mean?
When P2319 appears on a scan, it means the control module has flagged a problem in the ignition system: ignition coil "G" primary control circuit high. The fault sits in the powertrain (engine/transmission) group of the OBD2 standard.
“Circuit high” means the control module sees a voltage on the ignition coil "G" primary control circuit that is above the expected range — typically close to battery voltage. Physically this points to a short to a power feed, a broken ground return, or a failed component pulling the signal line high.
The module monitors this system continuously while driving. When readings fall outside the expected range for a defined number of drive cycles, it stores P2319 and switches on the warning light. Freeze frame data saved with the code shows the exact conditions — rpm, load, temperature, speed — at the moment the fault was detected, which is the best starting point for diagnosis.
Common symptoms of P2319
- increased fuel consumption
- misfires under load or at idle
- Check Engine Light on
- loss of power and jerking
- hard starting, especially in damp weather
What causes P2319?
- signal wire shorted to battery positive
- failed ignition coil "G" primary control pulling the signal high
- open ground return of the ignition coil "G" primary control
- moisture or oil in the spark plug wells
- damaged coil wiring or connector
- worn spark plugs or wrong plug gap
- faulty ignition control circuit in the ECM
- failed ignition coil or coil pack
How to diagnose P2319
- Connect an OBD2 scanner, confirm P2319 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
- Related codes often reveal the real root cause. Also check manufacturer technical service bulletins (TSB) for your make and model — many P0xxx issues have factory fixes or software updates. Search by VIN on the manufacturer site or nhtsa.gov.
- Visually inspect the wiring harness and connectors related to the ignition system for damage, corrosion, chafing or poor contact.
- With the ignition coil "G" primary control disconnected, measure signal voltage at the harness connector: a high reading with the component unplugged indicates a short to power in the harness; if it drops to normal, the component itself is faulty.
- Swap the coil to another cylinder and see if the fault code follows it.
- Inspect spark plugs for wear, oil or carbon tracks and check plug gaps.
- Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P2319 does not return.
How to fix P2319
Start with the cheapest and most common causes before replacing expensive parts:
- Replace an ignition coil — $150–$380
- Repair coil wiring or connector — $80–$250
- Replace spark plugs — $90–$250
How much does it cost to fix P2319?
Repair cost depends on which component actually failed. Typical scenarios for P2319 (parts and labor, USD, independent shop rates):
- Replace an ignition coil: $150–$380
- Repair coil wiring or connector: $80–$250
- Replace spark plugs: $90–$250
Overall, fixing P2319 usually costs between $80 and $380. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.
Can you drive with P2319?
Drive with caution and avoid load. Ignition faults cause misfires that quickly overheat and destroy the catalytic converter; if the Check Engine Light flashes, stop and fix it first.