Skip the auto shop - Our mechanics make house calls

Q: An intermittent misfire has triggered several trouble codes

asked by on

Intermittent misfire that sets multiple injector circuit failure codes. The codes are P0201, P0203, P0204, P0205, and P0206.

My car has 110000 miles.
My car has an automatic transmission.

Hi and thanks for your question. The codes P0201, P0203, P0204, P0205, P0206 are the cylinders that are not working. Your vehicle is only running on three cylinders that have fuel and possible fuel with the other cylinders at random times. Start the engine up and unplug on fuel injector at a time. If the engine begins to operate more rough than normal, then that injector is working correctly. If the engine does not change anything then that fuel injector was not working.

For each plug that you find is not working, check the harness for a voltage reference. If there is voltage, then the injector has stopped working and needs replaced. If there is no voltage, then get a noid light and plug it into the harness. This will check to see if the computer is sending signals to the injector. If there is no signal to the injectors, then there could be a break in the wiring or the computer could be damaged. If you need assistance in troubleshooting the misfire, then seek out a professional mechanic, such as one from YourMechanic, to help you with your vehicle.

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: Car won't start after sitting for 14 months

Hi there. Check the fuel pump to see if it is energizing, and check the fuel pump relay to see if it is clicking when you turn on the key. If the relay is not clicking, then remove the relay...

Q: Truck dies while driving - 2000 Dodge Dakota

Hello. You may have several issues at once contributing to the stalling. You will want to start by having the vehicle scanned for diagnostic troubleshooting codes. This can be done by a mechanic or at most local auto parts stores....

Q: partially engaged brakes

You will need to jack up the front wheels and see if the tires will turn freely. If both front wheels are binding then you should try to loosen the brake lines that connect to the master cylinder to see...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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.