Skip the auto shop - Our mechanics make house calls

Q: Code p0301

asked by on

So have this misfire cylinder 1 code changed spark plug check wires by putting them in different place can't figure out the problem put cleaner thinking maybe injector but can't find all the injectors to test them anyone know what else could cause this thanks oh I'll add change my muffler right down to cadlyic converter please help

My car has 164650 miles.
My car has an automatic transmission.

Hello. If the powertrain control module detects that there is an increase or decrease of the crankshaft revolutions per minute that is more than 2 percent, it will store the P0301 trouble code. A percentage increase or decrease in revolutions per minute greater than 10 percent indicates that the misfiring problem is more serious. The P0301 trouble code indicates that cylinder 1 is not getting the necessary spark resulting in a misfiring condition. There are multiple possible reasons and mechanical faults that trigger this code and just as many symptoms that can indicate a serious problem exists. Review this article to see several of the possible causes, and you should have a better indication of how to diagnose this problem.

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

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: If AWD is off do I now have FWD or RWD?

Hi there. Your Pontiac Torrent is a primary front wheel drive SUV; so it should be safe to drive during bad weather. However, I would recommend having the AWD repaired ASAP.

Q: Lost communication with the tcm

Depending on whether or not you have made any modifications to your car (i.e. aftermarket tune, other performance upgrades, etc), this may be a problem with the main power-train control module (PCM) not communicating with the transmission control module (TCM)....

Q: What can cause your car to stall out and what can cause the rpms to go up?

It sounds like you are getting a bad reading from the crankshaft or camshaft sensor. Have the computer scanned and the data stream monitored for problems with the two sensors to see which one is causing the stall and erratic...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.