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 car's ignition coils, specifically the one labeled 'B'. It's like a broken wire or a switch that isn't working right, making it hard for the car to start or run smoothly.
The engine control module (ECM) monitors the ignition coil circuits for faults. If it detects an open circuit or a problem with the coil's primary control circuit for coil 'B', it triggers this code.
P0352 indicates that the ECM has identified an issue with the primary control circuit of ignition coil B. This could be due to an open circuit, short circuit, or a failure in the ignition coil itself. The primary circuit is responsible for supplying the necessary voltage to the ignition coil to create a spark for combustion.
• Check Engine Light is on
• Engine misfires
• Rough engine idle
• Reduced engine performance
• Faulty ignition coil B
• Open or shorted wiring in the ignition coil circuit
• Poor electrical connection at the ignition coil
• Faulty ECM
ECM: Engine Control Module, the computer that controls engine functions.
Ignition Coil: A component that converts the battery's voltage to a higher voltage needed to create a spark in the spark plugs.
• Use an OBD-II scanner to verify the code.
• Inspect the ignition coil B and its wiring for damage.
• Test the ignition coil B for proper resistance.
• Check the ECM for proper operation.
• Replace faulty ignition coil B.
• Repair or replace damaged wiring or connectors.
• Ensure proper connection and secure all connectors.
• Replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Screwdriver set
$100 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect ignition coils and wiring.
• Perform routine maintenance checks.
• Use high-quality ignition components.
Engine Performance
• Avoid driving with a misfiring engine to prevent further damage.
• Get the vehicle inspected by a professional if unsure about repairs.
Check with your vehicle manufacturer for specific warranty coverage on ignition components.
This code has been commonly reported in vehicles with high mileage or those that have not had regular maintenance checks.
Moderate – While the vehicle may still run, it can lead to further engine damage if not addressed.
Driving with a misfiring engine can cause increased emissions and may not pass emissions testing.
• Engine running
• Warm engine temperature
The ignition coil is typically located on top of the engine, near the spark plugs.
Q: Can I drive with a P0352 code?
A: It's not recommended as it can lead to more severe engine damage and increased emissions.
Q: How do I know which coil is 'B'?
A: Refer to the vehicle's service manual for the ignition coil layout specific to your engine.
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A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
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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.