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Injectors not opening - 2004 Honda CBR 600 F(4)i

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If all of the injectors are not working, it is more than likely an ecm (computer or emission related) problem and not the injectors. Some auto or motorcycle shops will probably have the equipment to test the injectors.

Posted on Jul 07, 2014

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Injector number 4 is open what does that mean

It means that the solenoid circuit that controls the valve internal to the injector has an open, or incomplete circuit. This means the injector cannot fire, thus no gasoline will get into the #4 cylinder. Usually, this problem is in the injector itself and is fixed by replacing the injector. It is possible, however, for the problem to be in the wiring to the injector from the ECM. In order to avoid buying an injector only to find that the wiring is bad, you can swap the suspect injector with one from another cylinder. If the fault changes to the other cylinder, change the injector. If the fault stays with the #4 injector, check the wiring.

Nov 14, 2016 | Cars & Trucks

1 Answer

What does code P0202 on a 2006 Chevy Cobalt? It says "injector ckt open cylinder 2" but I have no idea what that means! ????

Well you either have a defective injector connector or wiring to it or the injector coil is an open circuit. Swap the injector to a different cylinder and see if that cylinder triggers a code or the code is still for cylinder #2, if triggers a new code the injector is defective, if the same code comes back after being cleared then you have either a bad injector connector or the wires from the PCM are open somewhere. You really need a full function scanner to make this job much easier.

Jun 17, 2016 | Cars & Trucks

2 Answers

1987 Delta 88. Car stopped running on the freeway. Starts, but runs like the timing is off. It appears injectors are always open. New ignition module, coils and cam sensor. Pulled rail and with key

Are you saying the injectors are getting power from a source other than the key switch ? They should be powered with the key on and the computer provides the ground connection to make them open. I could see one injector sticking open, but not all 6 injectors.

Oct 06, 2014 | 1987 Oldsmobile Delta 88

1 Answer

VW Passat 2lt TDi. Diesel Reconed Eng .replaced Injectors but doesnt want to start

When you open up the diesel injector lines (take injectors out) you let air into the system and the diesel cannot make its way past it. You have to bleed the lines by opening the injector lines at the injector by a half turn. (Always be careful with diesel injector systems, it is under enough force to shoot a stream right into and under your skin causing nasty results) Cover the injectors with a towel and turn the car over until diesel is leaking out of each line. (Keep away from injectors while turning it over!) After diesel is seen coming from injector lines, retighten injector lines and try starting.

Sep 13, 2013 | Cars & Trucks

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I have a 1992 ford thunderbird 3.8 only i injector shooting fuel out

Your injectors are timed in banks of three on your vehicle. If one is opening and others on that bank are not, then I would say your computer is ok, but your injectors are plugged or they are simply defective. Try moving the plug for that injector into another injector and see if that one opens and allows fuel (presuming you have them all out, it seems). Have you checked fuel pressure? make sure you're somewhere in that 65lbs range. that one injector simple opens up easier than the factory specified spring tension on them.

Apr 20, 2012 | 1992 Ford Thunderbird

2 Answers

04 intrepid p0202 injector open circute check all options do I need new pcm

You say power,the power is not from the PCM,only the signal is form the PCM,The power is from the pwer distribution box,the left side of engine comportment

Mar 23, 2012 | 2004 Dodge Intrepid

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Injector circuit open cylinder (1) and (4) SEINCENTO FAULT CODES PO201ANDPO204

The causes of a P0204 engine light code could be any of the following:
  • Bad injector. This is usually the cause of this code but doesn't rule out the possibility of one of the other causes
  • Open in the wiring to the injector
  • Short in the wiring to the injector
  • Bad PCM

Possible Solutions:
  1. First, using a DVOM check the resistance of the injector. If it isn't within specs, then replace the injector.
  2. Check for voltage at the fuel injector connector. It should have 10 volts or more.
  3. Visually check the connector for damage or broken wires.
  4. Visually check the injector for damage.
  5. If you have access to an injector tester, activate the injector and see if it operates. If the injector operates, then you likely have either an open in the wiring, or a blocked injector. If you do not have access to a tester, swap the injector with another one and see if the code changes. If the code changes, then change the injector.
  6. At the PCM, remove the driver wire from the PCM connector and Ground the wire. (Make sure you have the correct wire. If you're not sure, do not attempt) The injector should activate
  7. Replace the injector

Keep us updated about your advance.

Feb 11, 2011 | Fiat 500 Cars & Trucks

1 Answer

Trac off light came on and off then stayed on while driving, p0203p0204 p0300 codes when scanned with little machine better read open circuts in both injectors loss of power

P0203 - Injector Circuit Malfunction Cylinder 3

Powertrain Control Module (PCM) or Electronic Control Module (ECM) checks the injectors circuit resistance and monitors the voltage drop during normal operation. The PCM/ECM will trigger the P0203 code when the resistance or voltage drop at the injector #3 is out of specifications.

- Open or shorted wiring harness to the injector #3
- Bad injector #3

- If damage, repair injector wire harness or connector
- Replace injector
- Replace PCM or ECM

P0204 - Injector Circuit Malfunction Cylinder 4

Same info as the P0203 DTC

P0300 - Random/Multiple Cylinder Misfire Detected

When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the crankshaft position (CKP) sensor (POS) signal to vary, Powertrain Control Module (PCM) or Electronic Control Module (ECM) can determine that a misfire is occurring.

- Improper spark plug
- Insufficient compression
- Incorrect fuel pressure
- The injector circuit is open or shorted
- Fuel injectors may be faulty
- Intake air leak
- The ignition signal circuit is open or shorted

- Perform Injector Service
- Replace Spark Plugs
- Replace Injectors
- Replace Ignition Coils

Feb 03, 2011 | 2001 Pontiac Sunfire

1 Answer

Hi there i have a problem with one of the fuel injectors obd scanner says: injector #1 open circuit how can i trace the open or broken wire?


Jun 08, 2010 | 1996 Volkswagen Golf

1 Answer

Code P0205 - Injector Circuit Open - cylinder 5

Hi. Injector circuit open, it's mean, The injector is disconnected.
check the connector for that injector, loose or broken click.

Jul 05, 2008 | 2006 Ford Taurus

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