What is the trouble code for injector 4 circuit malfunction?
P0204 – Injector 4 -circuit malfunction Trouble Code Fault Location Probable Cause P0204 Injector 4 -circuit malfunction Wiring, injector, ECM
What should I do if my injector does not work?
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. At the PCM, remove the driver wire from the PCM connector and Ground the wire.
Is the p0204 injector code still open?
I have a 97 dodge ram 1500 5.9 with a p0204 code,#4 injector circuit open. When I checked the 2 wires at the connector were touching. I separated and taped them up,but the code and rough running is still there. Could the wires touching have ruined the injector?
What should voltage be at fuel injector connector?
Open in the wiring to the injector Short in the wiring to the injector First, using a DVOM check the resistance of the injector. If it isn’t within specs, then replace the injector. Check for voltage at the fuel injector connector. It should have 10 volts or more.
Is there an open circuit code on the fuel injector?
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).
Do you need to disassemble a fuel injector?
The technician needs to disassemble the fuel rail, de-activate the fuel pump and perform lengthy tests to prove the fault. However, there is another way. Using current ramping techniques the technician is able to prove the fuel injector without any disassembly at all. Get the scoop here and save time.
Can a PCM injector draw too much current?
An injector that has a resistance value outside the manufacturer’s specified range can draw too much current, damaging the driver inside the PCM. If the circuit is OK, the next step is to test the electronic portion of the injector. This is done by measuring the resistance between its two terminals.
Why is my cylin 3 fuel injector open?
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.
How to troubleshoot a p0204 injector malfunction?
The following steps will help you troubleshoot a P0204 code: Perform a visual inspection of the injectors and connections. Many problems can easily be found in the harness and connectors. So, begin your diagnosis by visually inspecting the sensor and its connection. First, check for other codes that would indicate cylinder misfire (P0301 – P0308).
What to do if there is a misfire code on a cylinder?
If a misfire code is present, there’s a good chance the injector fault is on that cylinder. If no misfire codes are currently stored, you can check the misfire counter PIDs (if you’ve got a capable scan tool and your car supports these parameters). These PIDs will help determine which cylinder is misfiring.
What does p0301 mean on a spark plug?
If your vehicle is equipped with individual coil packs instead of spark plug wires, start by removing the cylinder 1 coil and swapping it with the cylinder number 4 coil. If the misfire moved to cylinder number 4 (P0304), then you have determined that the coil pack is faulty and needs replacement.
The following steps will help you troubleshoot a P0204 code: Perform a visual inspection of the injectors and connections. Many problems can easily be found in the harness and connectors. So, begin your diagnosis by visually inspecting the sensor and its connection. First, check for other codes that would indicate cylinder misfire (P0301 – P0308).
If a misfire code is present, there’s a good chance the injector fault is on that cylinder. If no misfire codes are currently stored, you can check the misfire counter PIDs (if you’ve got a capable scan tool and your car supports these parameters). These PIDs will help determine which cylinder is misfiring.
If your vehicle is equipped with individual coil packs instead of spark plug wires, start by removing the cylinder 1 coil and swapping it with the cylinder number 4 coil. If the misfire moved to cylinder number 4 (P0304), then you have determined that the coil pack is faulty and needs replacement.
What happens when you miss a stroke on a fuel injector?
The cylinder can miss a stroke, causing immediate engine power loss and a noticeable sound effect. When this becomes severe enough, the driver will feel a jerking action from the engine and/or powertrain. Performance loss – the engine needs sufficient fuel for a proper, strong combustion.
Can a faulty fuel injector cause an engine to misfire?
A faulty fuel injector will cause your engine to misfire, and these can be pretty difficult to diagnose without flow testing them. Injector problems are not very common on newer cars, and because of this, you want to check out the other possible causes first, but it is absolutely worth checking.
What causes a fuel injector to misfire?
Lean misfire causes that only affect one cylinder include a dirty fuel injector, an open or shorted fuel injector, or a problem in the fuel injector driver circuit (wiring or PCM). Compression problems that may cause a misfire include a burned exhaust valve, bent intake or exhaust valve, or leaky head gasket.
Where are the cylinders on a Duramax injector circuit?
The FICM separates the high-voltage injector circuits into two groups: cylinders #2, #3, #5 and #8 and cylinders #1, #4, #6 and #7. The firing order is 1-2-7-8-4-5-6-3 with the odd-numbered cylinders located on the passenger side of the engine and the even-numbered cylinders located on the driver’s side.