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 part of the car that makes a spark to start the engine in cylinder 1.
The ion ignition coil for cylinder 1 is malfunctioning, affecting the engine's ability to properly ignite the air-fuel mixture.
The P136D code indicates an issue with the ion sensing ignition coil for cylinder 1. This coil is responsible for generating the spark needed for combustion and also detects misfires by measuring ionization in the combustion chamber. A fault in this coil can lead to misfires and poor engine performance.
• Engine misfire
• Rough idling
• Reduced fuel efficiency
• Faulty ignition coil
• Damaged wiring or connectors
• ECU malfunction
Ignition Coil: A component that transforms the battery's voltage to a higher voltage to create a spark.
ECU: Engine Control Unit, the computer that controls engine functions.
• Use an OBD-II scanner to confirm the code.
• Inspect the ignition coil and its connections for damage.
• Test the ignition coil for proper operation.
• Replace the faulty ignition coil.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECU if necessary.
• OBD-II scanner
• Multimeter
• Socket set
$150 - $400
Moderate
• BMW 3 Series
• MINI Cooper
• Peugeot 308
• Regular maintenance checks
• Timely replacement of ignition components
• Avoiding extreme driving conditions
Engine Performance
• Get the vehicle checked by a professional mechanic.
• Avoid driving long distances until the issue is resolved.
Check with your vehicle manufacturer for warranty coverage on ignition components.
This code is commonly associated with vehicles using advanced ignition systems with ion sensing technology.
Moderate – Addressing the issue promptly can prevent further engine damage.
Ignoring this code may lead to increased emissions and potential engine damage.
• Engine at operating temperature
• Vehicle in idle or under load
The ignition coil is located on top of the engine, directly above the cylinder it serves.
Q: Can I drive with a P136D code?
A: It's not recommended, as it can cause further engine damage and poor performance.
Q: How can I prevent this issue?
A: Regular maintenance and timely replacement of ignition components can help prevent this issue.
High-End · Full-system diagnostics
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Network faults often require full-system access instead of a generic code reader alone.
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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.