Q: I have an open circuit code on the fuel injector on cylinder 3.

asked by on

My car is a pontiac grand prix GTP 1999. Do you know what controls the fuel injectors?

My car has 144000 miles.
My car has an automatic transmission.

Hi there. From the description you have provided, your vehicle has an open circuit code on the #3 fuel injector, is going to require circuit testing. The fuel injector(s) are controlled by the injector driver(s) in the ECM (engine control module). Battery voltage is supplied to all of the fuel injectors and the ground side is controlled by the ECM. It could be, a poor connection or wiring problem at or to the #3 fuel injector. There is a noid light available that plugs into the connector, to check for proper signal while cranking. It could be, the #3 fuel injector coil is open.

Measuring the resistance value between the fuel injector terminals could confirm the fault. It could be, the injector driver has failed in the ECM. I recommend having your vehicle’s open circuit code on the fuel injector on cylinder 3 - check engine light on be diagnosed and repaired by a certified technician, such as one from YourMechanic.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. I have an open circuit code on the fuel injector on cylinder 3.

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: Top of steering shaft inside wheel sounds dry when turning how do you fix it?

It sounds like your steering clock spring in the column for the air bag and steering wheel controls is binding or getting ready to break. I recommend having the steering wheel inspected by a mechanic who can verify the problem...

Q: Car Sitting waiting for repair. Sat 9 Months Now repair finished but will not start.

Hi...gasoline has a limited shelf life. After four months or so, but sometimes even earlier, gum and varnish develop. Gasoline that is nine months old will typically not have enough of the volatile fractions (from the refinery process) to start...

Q: My car cranks but doesn't start, the gas is not coming out by the fuel filter, and the lights are not coming on by the dashboard

With little information available, it is difficult to definitively say what the problem is. If the starter is working, and cranking over the engine, then the battery and the starter can be considered okay for the moment. If you are...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...
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...