Q: Willnot start. P0300 code and converter code.

asked by on November 29, 2016

P0300 and converter codeswill not start now. Before it started but ran rough and low power.

My car has 145000 miles.
My car has an automatic transmission.

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

How do I lock the power windows?
The power windows can be locked so that children are unable to operate them. To lock the power windows, press the power window lock switch, which is located in front of the driver’s power window switches. Press this button a...
How do I tilt the sunroof?
The sunroof can be tilted to bring extra fresh air into the vehicle. To open the sunroof tilt, push the Sunroof button (located on the ceiling) upwards. To close the sunroof tilt, pull the button downwards.
How do I mute with the steering wheel?
You can control your sound system using the steering wheel. To mute the sound system, press the Mute button. Press this button again to unmute the system.
Possible ECM problem
Hello! Im assuming the code was a P0606 which indicates a PCM/ECM processor internal fault. I suggest checking the wiring and terminal at the ECM because at times it will be just a bad connection/wire causing the trouble code. There...
Car getting low gas mileage
Yes, 16 mpg is very low (https://www.yourmechanic.com/article/5-essential-things-to-know-about-fuel-economy) for a Kia Rondo, especially with the amount of highway driving you do daily. Start with basics like the air filter (https://www.yourmechanic.com/services/air-filter-replacement) and tire pressure (https://www.yourmechanic.com/article/how-do-i-check-my-tire-pressure), which are two big items that will...
What could be causing my steering wheel to jerks from left to right?
Hi there. Check to see that all of the connections are tight. Grease up the ball joints (https://www.yourmechanic.com/services/lubricate-ball-joints) to make sure that they are lubricated. If all of the parts are tight that you installed, then go over to the...
Car is stalling when giving too much gas. Won't start.
This may be a sign of a failing throttle position sensor. The throttle position sensor (TPS) is a sensor used to monitor the throttle position of the throttle plate inside the throttle body in relation to your foot position on...
What is the cost for full synthetic oil and filter change, lube vehicle, and top all fluids?
Billing question sent to CS for the cost for a full synthetic oil and filter change, lubricate the vehicle, and to top off all fluids
electrical issues 2003 Honda accord ex coupe
If you had any electrical work done recently it is possible that something could have been done incorrectly that has caused this issue. I would try to recall any time your vehicle was serviced in the last 6 months or...

Related articles

A Buyer’s Guide to the 2011 Buick Lucerne
2011 2011 marked the final year of production for the Buick Lucerne, a venerable full-sized sedan that offers ample room in the interior. The car was noted for the significant amount of interior space and trunk space offered, although it...
A Buyer's Guide to the 2012 Buick Regal
The The 2012 Buick Regal is definitely not the Regal of yesteryear you may have heard your grandparents fawn over. This mid-size sedan has a lot of modern features that start at the engine and stretch all the way to...
A Buyer’s Guide to the 2012 Buick LaCrosse eAssist
Buick Buick has entered the hybrid market in a big way with the 2012 Buick LaCrosse eAssist model. It has all of the same great looks and features that you would expect from a luxury sedan from Buick. However, the...