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 talking to one of the parts that helps the engine start and run. It's like when a walkie-talkie isn't working well, and you can't hear the other person clearly.
The P035E code indicates that the engine control module (ECM) has detected a low voltage condition in the ignition coil F control circuit.
The ignition system in a vehicle uses ignition coils to transform the battery's voltage to a much higher voltage needed to ignite the air/fuel mixture in the engine's cylinders. Each coil is controlled by the ECM, which sends a signal to the coil to fire. The P035E code means that the ECM has detected a problem with the signal going to the ignition coil F, specifically that the voltage is lower than expected.
• Check Engine Light is on
• Engine misfires
• Rough engine idle
• Decreased engine performance
• Faulty ignition coil F
• Open or shorted wiring in the ignition coil F circuit
• Poor electrical connection in the ignition coil F circuit
• Faulty ECM
ECM: Engine Control Module
Ignition Coil: A device that transforms the battery's voltage to a higher voltage needed to ignite the fuel.
• Use an OBD-II scanner to confirm the code.
• Inspect the ignition coil F and its wiring for damage or disconnections.
• Check the electrical connections for corrosion or looseness.
• Test the ignition coil F for proper operation.
• Replace the faulty ignition coil F.
• Repair or replace damaged wiring or connectors.
• Ensure all electrical connections are secure and clean.
• Replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Socket set
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect ignition system components.
• Keep electrical connections clean and secure.
• Perform scheduled maintenance on the vehicle.
Engine Performance
• Do not ignore the Check Engine Light.
• Have a professional diagnose the issue if unsure.
• Avoid driving the vehicle excessively until repaired.
Check with the vehicle manufacturer for warranty coverage on ignition components.
This code has been reported in various models, often related to ignition coil failures or wiring issues.
Moderate – While the vehicle may still be drivable, it can lead to further engine damage if not addressed.
Driving with a misfiring engine can lead to increased emissions and potential safety hazards.
• Engine running
• Vehicle at operating temperature
The ignition coil F is typically located on the engine, near the cylinder head.
Q: Can I drive with a P035E code?
A: It's possible to drive short distances, but it's not recommended as it can cause further damage.
Q: How can I prevent this code from appearing?
A: Regular maintenance and inspections 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.
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.
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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.