Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
Your car has a part called an ignition coil that helps start the engine. This code means there's a problem with the wires or the coil itself for one of these parts, like a broken wire or a bad connection.
The P0355 code indicates a malfunction in the ignition coil circuit, specifically for the coil labeled 'E'. This could be due to an open circuit or a failure in the coil itself.
The ignition coil is responsible for converting the battery's low voltage to the high voltage needed to ignite the fuel in the engine. The 'E' coil refers to the fifth coil in the firing order. The P0355 code is triggered when the Engine Control Module (ECM) detects a malfunction in the primary control circuit of this coil, which could be due to an open circuit or a fault within the coil.
• Engine misfire
• Rough idling
• Check engine light illuminated
• Faulty ignition coil
• Open or shorted ignition coil harness
• Poor electrical connection in the ignition coil circuit
Ignition Coil: A component that converts the battery's voltage to a higher voltage to ignite the engine's fuel.
OBD-II: On-Board Diagnostics, a standardized system for self-diagnosing and reporting vehicle issues.
• Use an OBD-II scanner to confirm the P0355 code.
• Inspect the ignition coil and its wiring for damage or disconnection.
• Test the ignition coil with a multimeter to check for proper resistance.
• Replace the faulty ignition coil.
• Repair or replace damaged wiring or connectors.
• Clear the code and test drive to ensure the issue is resolved.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect ignition system components.
• Ensure all electrical connections are secure.
• Replace spark plugs and coils at recommended intervals.
Engine Performance
• Avoid driving the vehicle until the issue is fixed to prevent further damage.
• Consult a professional mechanic if unsure about the repair process.
Check with your vehicle's manufacturer for specific warranty coverage on ignition components.
The P0355 code has been a common diagnostic trouble code for vehicles with electronic ignition systems since the introduction of OBD-II standards.
Moderate – While the vehicle may still be drivable, it could lead to further engine damage or reduced performance if not addressed.
Driving with a misfire can cause damage to the catalytic converter and is not recommended. Always address check engine light issues promptly.
• Engine running
• Use of a diagnostic tool
The ignition coil is typically located on top of the engine, attached to the engine block or cylinder head.
Q: Can I drive my car with a P0355 code?
A: It's not recommended to drive with this code active, as it can cause engine misfires and damage other components.
Q: How do I reset the check engine light after fixing the P0355 code?
A: You can use an OBD-II scanner to clear the code, or disconnect the battery for a few minutes to reset the system.
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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.