Skip the auto shop - Our mechanics make house calls

Q: I have p0203 dtc injector circuit malfunction

asked by on

I have a p0203 injector circuit malfunction after valve cover replacement

My car has 194000 miles.
My car has an automatic transmission.

A: Hello. If this occurred right after the rep...

Hello. If this occurred right after the replacement then I would look for a pinched wire. It is common for there to be a wire that is pinched or loose or a bad connection. If everything is fine it may simply be a bad injector. I would test the circuit first before replacing the injector. If you need assistance with this, consider having a technician from YourMechanic come to your home or office to inspect your circuit and replace the injector if necessary.

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: Tappet noise oud, rough idle 2009 Ford Focus

Hi there - the valve mechanism on your Zetec engine uses solid lifters (or cam followers to be more precise), and need to be adjusted periodically. As you mention, the delayed maintenance may not be helping here as well. I...

Q: Car running hot

Hi there. Many components make up your cooling system. If any of these components are not functioning properly, it will cause your vehicle to overheat. If your vehicle is not leaking any coolant chances are that your radiator fan(s) are...

Q: I got pouring out as fast as I put it in the radiator it's on back passager side

Hello, thank you for writing in. The vehicle is likely leaking from a hose or heater core. There are several components on that side of the vehicle. Are there any signs of moisture inside the vehicle? If not you will...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
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...