Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is saying that the part that helps make the spark for one of the engine's cylinders is getting too much electricity. It's like when a light bulb gets too much power and might burn out.
The P2310 code indicates that the power going to the ignition coil for cylinder D is higher than expected, which could lead to problems with engine performance.
The ignition coil is responsible for transforming the battery's voltage to a much higher voltage needed to create a spark in the spark plugs, which ignites the air/fuel mixture in the engine's cylinders. The 'Primary Control Circuit High' means that the voltage in the primary circuit of the ignition coil D is higher than the manufacturer's specified range.
• Check Engine Light is on
• Engine misfires
• Poor engine performance
• Faulty ignition coil
• Wiring issues such as short to voltage
• Faulty Powertrain Control Module (PCM)
Ignition Coil: A component that converts low voltage from the battery to high voltage needed for spark plugs.
PCM: Powertrain Control Module, the car's computer that controls engine and transmission functions.
• Use an OBD-II scanner to confirm the code.
• Inspect the ignition coil and its wiring for damage.
• Test the voltage at the ignition coil.
• Replace the faulty ignition coil.
• Repair or replace damaged wiring.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Dodge Ram
• Regularly inspect ignition components.
• Use quality replacement parts.
• Keep the engine's electrical system maintained.
Engine Performance
• Avoid driving the vehicle until repaired to prevent further damage.
• Consult a professional mechanic if unsure about the repair process.
Check with your vehicle manufacturer; ignition system components may be covered under the powertrain warranty.
This code has been associated with ignition system issues in various vehicles, often due to aging components or wiring problems.
Moderate – Should be addressed soon to prevent engine performance issues.
Driving with a misfiring engine can lead to increased emissions and potential engine damage.
• Engine running
• Vehicle stationary
The ignition coil is typically located on top of the engine, near the spark plugs.
Q: Can I drive with a P2310 code?
A: It's not recommended as it can cause engine performance issues and potentially damage the engine.
Q: How do I know if my ignition coil is bad?
A: Symptoms include engine misfires, poor performance, and a check engine light.
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A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
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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.
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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.