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 is having trouble with a signal from the ignition system. It's like when your remote control can't talk to the TV properly.
The P036C code indicates that the voltage in the ignition control circuit is higher than expected, which can affect engine performance.
The P036C code is triggered when the Engine Control Module (ECM) detects a high voltage condition in the Ignition G control circuit. This can be due to a short to voltage or an open circuit condition.
• Check Engine Light is on
• Engine misfires
• Poor engine performance
• Faulty ignition coil
• Wiring issues in the ignition circuit
• Defective ECM
ECM: Engine Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code.
• Inspect the ignition coil and wiring for damage.
• Test the voltage in the ignition circuit.
• Replace the faulty ignition coil.
• Repair or replace damaged wiring.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular maintenance of ignition components
• Inspect wiring for wear and tear
• Use quality replacement parts
Engine Performance
• Don't ignore the Check Engine Light.
• Have a professional diagnose the issue if you're unsure.
• Regularly check and maintain your ignition system.
Check with your vehicle manufacturer for warranty coverage on ignition components.
The P036C code has been reported more frequently in vehicles with high mileage or poor maintenance history.
Moderate – This issue should be addressed soon to avoid further engine performance problems.
Driving with a malfunctioning ignition system can lead to increased emissions and may fail emissions testing.
• Engine running
• Under load conditions
The ignition coil is usually located on top of the engine, near the spark plugs.
Q: Can I drive my car with a P036C code?
A: It's possible, but not recommended as it can lead to further engine issues.
Q: Will a P036C code cause my car to fail an emissions test?
A: Yes, a malfunctioning ignition system can cause increased emissions.
High-End · Full-system diagnostics
A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.
Network faults often require full-system access instead of a generic code reader alone.
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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.