Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer has detected a problem with the electrical circuit that controls one of the ignition coils, which helps the car start and run. It's like a switch isn't working right for one of the car's spark plugs.
The P2307 code indicates a high voltage condition in the primary circuit of the ignition coil labeled 'C'. This could be due to an open circuit, short to voltage, or a faulty ignition coil.
The ignition coil is responsible for converting the battery's low voltage to the high voltage needed to create a spark in the engine's cylinders. The primary control circuit is monitored by the Powertrain Control Module (PCM), and if it detects a voltage that is too high, it triggers the P2307 code.
• Check Engine Light is on
• Engine misfires
• Rough idle
• Reduced engine performance
• Faulty ignition coil C
• Open or shorted wiring in the ignition coil circuit
• Faulty PCM or ECM
• Corroded or damaged connectors
PCM: Powertrain Control Module
ECM: Engine Control Module
• Use an OBD-II scanner to confirm the code.
• Inspect the ignition coil C and its wiring for damage.
• Test the ignition coil with a multimeter.
• Check for voltage at the ignition coil connector.
• Replace faulty ignition coil C.
• Repair or replace damaged wiring or connectors.
• Replace or reprogram the PCM if necessary.
• OBD-II scanner
• Multimeter
• Socket set
$100 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular maintenance and inspection of ignition system components.
• Ensure proper installation of ignition coils.
• Use high-quality replacement parts.
Engine Performance
• Avoid driving the vehicle until repaired to prevent further damage.
• Consult a professional mechanic for accurate diagnosis and repair.
Check with the vehicle manufacturer for warranty coverage on ignition system components.
This code has been common in vehicles with coil-on-plug ignition systems due to wear and tear or poor electrical connections.
Moderate – Addressing this issue promptly can prevent engine damage and maintain performance.
Ignoring this code can lead to increased emissions and potential engine damage, which may not comply with vehicle emissions standards.
• Engine running
• Ignition system active
The ignition coil C is typically located on the engine, near the spark plugs.
Q: Can I drive with a P2307 code?
A: It's not recommended to drive with this code as it can lead to engine misfires and potential damage.
Q: How do I clear the P2307 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, it should not return.
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Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
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Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
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Fitment Required · Vehicle-fitment part
Commonly relevant for misfire, ignition-efficiency, and some drivability-related repairs.
Misfire and ignition-related faults commonly involve spark plugs as part of the repair path.
Check the correct plug type, gap, and engine application for your vehicle.
View options on Amazon
Fitment Required · Vehicle-fitment part
Relevant when the fault points toward ignition-coil performance or cylinder-specific ignition issues.
Some ignition faults involve coil performance or cylinder-specific coil problems.
Match the coil to your engine and confirm the failed component before ordering.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.