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

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: Getting codes P0161 and P0325

Hello. Both codes indicate a circuit failure, and I suspect that the connectors were not properly reconnected after changing the valve cover gasket. These codes are not likely actual part failures. It is a very tight squeeze to get in...

Q: what could cause your brakes to not stop if you have new brake shoes, pads, and have bled the brake line to master cylinder?

Hi there. Typically when you experience braking issues as you've described shortly after replacing pads and rear shoes, the problem is typically caused by a brake caliper or master cylinder problem. However, it could also be due to an installation...

Q: One of the relays is clicking and draining the battery

There could be a parasitic draw involving the relay that is keeping it engaged. Lexus specifications for parasitic draw with the key off is approximately 50 milliamps. Anything over this amount indicates a parasitic draw. You could remove the fuses...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.