Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the spark plug or the part that makes the spark in the second cylinder of your car's engine. It's like if a candle won't light because the match isn't working right.
The P136E code indicates an issue with the ion sensing function of the ignition coil for cylinder 2, which affects the ignition process.
The ignition coil for cylinder 2 is responsible for creating the spark that ignites the air/fuel mixture in the cylinder. The ion sensing function in the coil helps monitor the combustion process by detecting ions in the combustion chamber. A fault here can affect engine performance.
• Engine misfire
• Poor fuel economy
• Check Engine Light is on
• Faulty ignition coil
• Damaged spark plug
• Wiring issues in the ignition circuit
Ignition Coil: A component that transforms the battery's voltage to a higher voltage to create a spark in the spark plugs.
Cylinder: A chamber within the engine where fuel is burned to produce power.
• Use an OBD-II scanner to confirm the code.
• Inspect the ignition coil and spark plug for cylinder 2.
• Check the wiring and connections for damage or corrosion.
• Replace the faulty ignition coil.
• Replace the damaged spark plug.
• Repair or replace damaged wiring.
• OBD-II scanner
• Multimeter
• Socket set
$150 - $300
Moderate
• Chevrolet Malibu
• Ford Focus
• Toyota Camry
• Regularly inspect spark plugs and ignition coils.
• Perform routine engine maintenance.
• Ensure proper wiring connections.
Engine Performance
• Avoid driving long distances until the issue is fixed.
• Have the vehicle inspected by a professional mechanic.
Check with your vehicle manufacturer for warranty coverage on ignition components.
This code has been associated with ignition coil issues in various vehicles, often due to wear and tear or electrical faults.
Moderate – It should be addressed soon to prevent further engine damage.
Driving with a misfire can cause damage to the catalytic converter and increase emissions.
• Engine at operating temperature
• Vehicle in idle or driving condition
The ignition coil for cylinder 2 is located on the engine, typically above the cylinder head.
Q: Can I drive with a P136E code?
A: It's not recommended to drive for long periods with this code, as it can cause engine damage.
Q: How do I know if my ignition coil is bad?
A: Common signs include engine misfires, rough idling, and poor fuel economy.
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.
View on Amazon
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.
View on Amazon
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.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.
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.