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 computer in your car has detected a problem with the electrical signal going to one of the ignition coils. It's like when a light switch is turned on, but the light bulb doesn't light up because there's too much electricity trying to get through.
The engine control module (ECM) monitors the ignition coil circuits for faults. If it detects a high voltage condition in the ignition coil 'F' control circuit, it sets the P035F code.
The P035F code is triggered when the ECM detects a high voltage condition in the ignition coil 'F' control circuit. This could be due to a short to voltage or an open circuit. The ignition coil is responsible for converting the battery's low voltage to high voltage, which is necessary to create a spark in the engine's cylinders.
• Check Engine Light is on
• Engine misfires
• Poor fuel economy
• Reduced engine performance
• Faulty ignition coil
• Open or shorted ignition coil harness
• Poor electrical connection in the ignition coil circuit
• Faulty 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 its wiring for damage.
• Test the ignition coil for proper operation.
• Check for any open or short circuits in the ignition coil wiring.
• Replace the faulty ignition coil.
• Repair or replace damaged wiring or connectors.
• Clear the code and test drive the vehicle to ensure the problem is fixed.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect ignition coils and wiring.
• Perform routine maintenance as recommended by the manufacturer.
• Avoid driving through deep water which can damage electrical components.
Engine Performance
• If the Check Engine Light is on, have your vehicle checked as soon as possible.
• Avoid driving the vehicle until the issue is resolved to prevent further damage.
Check if your vehicle's ignition system components are covered under the manufacturer’s warranty.
The P035F code has been reported in vehicles with high mileage or those that have been exposed to harsh environmental conditions.
Moderate – It is advisable to address this issue promptly to avoid engine performance problems.
Driving with an active Check Engine Light may result in increased emissions and can affect vehicle safety.
• Engine idling
• Vehicle stationary
The ignition coil is typically located on top of the engine, near the spark plugs.
Q: Can I drive my car with a P035F code?
A: It's not recommended to drive with a P035F code as it may lead to further engine damage.
Q: How can I prevent a P035F code from occurring?
A: Regular maintenance and inspection of the ignition system can help prevent this code.
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Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
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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.