Skip the auto shop - Our mechanics make house calls

Q: Misfire code 302 cylinder 2

asked by on

Already replaced spark plugs with no resolution. Moved coil/boot from cylinder 2 to cylinder 1. If I recheck the codes and I get a cylinder 1 misfire code, I assume it is a bad coil, other wise the problem still resides in cylinder 2. Is my logic correct?

My car has 186000 miles.
My car has an automatic transmission.

A: Hey there. Your logic is absolutely correct...

Hey there. Your logic is absolutely correct. This is in fact one of the most commonly used ways to diagnose a bad ignition coil. If the trouble code turns to a P0301, the ignition coil is faulty. If the trouble code remains a P0302, the problem could be the cylinder two fuel injector causing this issue. If this is the case, I would recommend enlisting the assistance of a qualified professional to replace your fuel injector on the number two cylinder.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: How do I scan the preset stations?

You can use the scan station to only scan through your preset stations, to see which presets are available, and what they’re currently playing. To use the preset scan feature, press and hold the Scan button until it beeps. The...

Q: What are the effects or symptoms of bad fuel injectors?

Hello. A bad fuel injector can fail closed, fail open or not seal when closed and can work normal but have reduced flow from blockage. A fuel injector that is failed closed will cause total misfire all the time on...

Q: Oil pressure light turns on at idle

First, make sure you are using the right viscosity engine oil, as specified in the your vehicle's owner's manual, and install a new oil filter using only a dealer-supplied original equipment manufacturer (OEM) filter. If after executing those two steps...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...