Fuel Injector Circuit Malfunction - How To Diagnose

Fuel Injector Circuit Malfunction - How To Diagnose - Problem Solved

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3 жыл бұрын

In this video I diagnose a P0202 cylinder 2 injector circuit malfunction fault. This is the exact same process for P0201 P0203 P0204 P0205 & P0206 on this vehicle.
If you have an issue like this one, then following these simply checks will allow you to accurately eliminate possibilities & diagnose the fault 100%
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Disclaimer:
GerardBurke is a qualified motor technician who has completed modules & courses in manual handling and all aspects of workshop safety. These videos are not intended to be used by anyone who is not trained and or qualified to carry them out.
Due to factors beyond the control of GerardBurke, I cannot guarantee against improper use or unauthorized modifications of this information. GerardBurke assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. GerardBurke recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of GerardBurke, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not GerardBurke.
The vehicle I was working on was a Holden commodore VZ
Related fault codes
P0200
P0201
P0202
P0203
P0204
P0205
P0206
P0207
P0208
#InjectorCircuitFault #HowToFix #P0202

Пікірлер: 76

@jgeorges3061 3 жыл бұрын

AWESOME LOVE UR LOGIC AND THE WAY YOU APPROACHED IT LED U TO BAD INJECTOR THANKS FOR SHARING.

@GerardBurkeBurkesGarage 3 жыл бұрын

Thanks for the kind words J, I really appreciate it 🙏🙏

@javierfernandez7005 Жыл бұрын

Wow that was a great video very articulate very informative to the point without other none worthy information great video great explanation a lot of people should take note and lessons from this man.

@jeffersoncook3948 2 жыл бұрын

Amazing video man. This is the most in depth video I’ve seen for this problem and it is going to be a ton of help. Seeing how easy it can be has taken a lot of stress off of this job thank you man!!

@firoznanji1771 Жыл бұрын

Very well Explained. I have a P0201 code on my 2007 Nissan Qashqai, 1.5dci .Checked with NOID light , no signal from ECM. But will check the Injector itself anyway.

@The007Weasel 2 жыл бұрын

Great stuff thanks Gerad, and makes a big difference to have a manual for the vehicle......Haynes don't do a paper one for mine, and I queried their latest digital manuals and got a reply saying they can only include what data the manufacturer provides....so bad luck...it won't be any use to fix the fault ( heated rear windscreen on my daughters car...long story) so I won't blind buy one for mine. I've never had an injection system fault before, so good to see it looks simple enough; permanent 12v feed to injectors and presumably the ECU provides timed pulsed grounds to fire the injectors. Not so on my car....P0202 and 0204 stored faults stored with all injectors measuring approx 4k ohm, and no 12v present at any injectors. No flash when I try substituting an LED ( I don't have one of those indicator lamps you show). I'm wondering if it's a high voltage peizeo electric system, perhaps. I was going to try my very old spark plug neon, but couldn't find it. And like yours, very intermittent, so can't hope to find an intermittent fault when it's not active. Anyway; on your video, you show the wiring diagram; fuse feeding a common continuous 12v to injector supply side. Fair enough. And at 4.45 you say number 2 is low at 3.5v, when running. But at 5.50 you measure across the suspect number two injector to find open circuit. Hmm, so whats dropping the 12v down to 3.5v across an open circuit? Got to be an internal short to ground partway along on the injector coil when at running temp hasn't it? Oh and at 6.16 your'e saying injectors aren't expensive. Wow, please, please tell me where you're getting them, cos they're £200+ each, and that's exchange items wherever I've looked for my car. All the best, Allan.

@patkelly7999 3 жыл бұрын

Great job as always,Thankyou Gerard:):)

@GerardBurkeBurkesGarage 3 жыл бұрын

Cheers Pat 🍻 I hope you had a good weekend with the restrictions easing 🇮🇪🍀🙏🙏

@miker.5495 Ай бұрын

Excellent tutorial sir! Thank you. I'm going to apply this info to my 2003 ZX12R with a #4 injector fault code.

@seshachary5580 Жыл бұрын

very educative, Thank you regards

@gabeo9474 Жыл бұрын

Great work!

@MiracleMAX 3 жыл бұрын

Great advice mate, including protecting the engine from dirt entry. Would have loved to see an oscilloscope connected comparing current ramps. I once had a VZ that was fine on all, except missing the 'hump' on the current ramp on one injector - sticky injector, it wasn't mechanically opening. Well done on your video - very informative!

@GerardBurkeBurkesGarage 3 жыл бұрын

For some jobs it's impossible to over look the scope 😉 It's always rewarding for me to be able to teach and share with what I believe to be very basic tools. Everyone who is working on cars needs a multimeter and you can use many different things to back probe and check circuits. Understanding a system following a wiring diagram then breaking it down to it's most simplistic form. I absolutely love it, I have diagnosed 3 injector failures in different models the last 6 weeks and I love to share that knowledge onto people that may not be able to get the info from around them 👌💪 Thanks for watching mate, hope you had a great weekend 🙏

@MiracleMAX 3 жыл бұрын

@@GerardBurkeBurkesGarage Cheers Mate. I totally agree. I would have done exactly the same - starting with the basic tools that everyone should have. But.......I couldn't help but bring out my Pico for a road test. Good for other tradies as well. You are right. If anyone intends doing repairs, they should become familiar with wiring diagrams & how systems actually worth, rather than focusing on a tool that just tells you what the fault is (in theory).

@bobmcnelis3648 2 жыл бұрын

Good Job!

@ryancooper73 2 жыл бұрын

Man I wish I could bring you my car, I have this fault as well even though the injector was already replaced. But with your method I'm sure it would be fixed! Top job

@GerardBurkeBurkesGarage 2 жыл бұрын

Thank you Ryan

@persiantech8274 Жыл бұрын

Same as my issue:( No one knows what’s going wrong with my TDi 1.6 golf 2012 with 84k mileage Already replaced 4 injectors but the fault is still here.. Who should done this job for me ?! Electric man or Mechanic man ?! Any advice please :(

@tomkaraitiana6136 3 ай бұрын

Awesome. Thanks bro

@jessesworld6400 2 жыл бұрын

Great Advice on everything, very detailed, I'm having a P0203 issue on my car currently. I've already replaced all six spark plugs and the coil pack on cylinder 3 and it didn't fix the issue, the car is still running very roughly and reporting a misfire on cylinder 3, i'm sure that it's reporting a misfire because the car is in failsafe mode since that injector is probably not working. I'll go through your diagnostic steps, but unfortunately I have to remove my intake AGAIN just to access that plug. I don't have all the tiny wire probes that you do to check the wiring from the PCM up to the injector plug, but alas I think it's just going to be a fruitless attempt if I did and the injector is just bad. I have a 2008 Chrysler Sebring with 220000 miles on it so it's unlikely that its just a bad or dirty wire. Thanks again.

@xynostasos9022 2 жыл бұрын

So did you fix your problem? I'm facing a P0203 injector issue on cylinder 3 along with misfires and my car goes into limp mode within seconds of driving.

@johnnysharp1451 5 ай бұрын

Did you get the issue fixed? Im here cause i have tje same issue with the same make model and year

@dustinreber4109 2 ай бұрын

Might be your wiring harness, though when you get that changed get the fuses as well and get a computer reset and you should be good

@damo100able 2 жыл бұрын

Very good mechanic

@GerardBurkeBurkesGarage 2 жыл бұрын

Thank you Damien

@fujitamxags5969 2 жыл бұрын

muy buen video gracias por la información

@GerardBurkeBurkesGarage 2 жыл бұрын

Thank you

@train4905 2 жыл бұрын

Exellent

@lanreoshisami8934 2 жыл бұрын

My man GB. God bless you for doing this video and more knowledge you will get in Jesus Christ name. Thx again player.

@GerardBurkeBurkesGarage 2 жыл бұрын

🙏🙏❤️❤️

@georgeduperon3632 Жыл бұрын

Very helpful video. Thanks

@jimmyk6336 2 ай бұрын

My vehicle (2008 Ford Edge) is having the exact same issue. I was leaning towards a faulty coil but after watching the video I'm now leaning towards the injector. Unfortunately my problem is the same # 2 cylinder so I'll have to remove the intake plenum to get to the injector for testing...

@andreharris9787 Жыл бұрын

Question can the P0201 code be the underlining issue when I get the code P219A? Great video. Kind regards, Andre

@mobilemike8500 Жыл бұрын

I've been a mechanic for 56 years I always look for videos to help me with certain jobs diagnosing 06 Cadillac CTS injector code number two cylinder. Seems like the battery is different in this video in the car so I don't know if you change the battery during the video or you're working on different cars the one I'm working on has the injection harness right at the front of the manifold on the passenger side so without pulling manifold you can measure injector resistance from the split plug right there. If the measurement was bad there then I would pull the manifold. Somebody already replaced injector before I got to this job. So I back probe the power wire and the ground signal at the harness with the engine running and the scan tool showed injection pulse-width at zero and I had no voltage pulse at all on that injector so I know by disconnecting the harness right there and seeing no voltage between the ground signal and the power signal that it has to be coming from the computer or wiring and on this car it only happens for about 3 minutes in the morning and then it goes away so it had to be tested with the engine cold. Ultimately trace it back to the injection driver module inside the computer. Like you say flow tests are different and you can check resistances without pulling the manifold all the way back to the computer if you want just a little help for anybody struggling with this one seems like a lot of people online can't figure out the problem

@bcbjbggjh9102 Жыл бұрын

how did u prob the multimeter into injector during live test, can u prob it any wires for results , did u have one wire on the positive or negative battery and then one wire to the injectors?

@caliwestmiami Жыл бұрын

I am not getting battery voltage on Injector 6 and it seems as if I am getting intermittent battery voltage on injector 4 but Injector I am getting battery voltage from Injector 2 coming from the ECU on my 2004 Infiniti G35. Could it be possible that my #4 and #6 circuit on the ECU is compromised?

@antof1235 3 жыл бұрын

Why o why do they not replace the set, few extra quid now saves on labor costs in the NEAR future. Thank you for another great tutorial.

@GerardBurkeBurkesGarage 3 жыл бұрын

All you can do is give the option and let them decide 🙂 Thanks for watching and commenting Anthony 👌👍

@antof1235 3 жыл бұрын

@@GerardBurkeBurkesGarage to be honest, subing, liking and commenting on your Chanel is the least I can do to support you, as your a wealth of knowledge and really easy to understand. 🙏 Thank you ☘️☘️

@GerardBurkeBurkesGarage 3 жыл бұрын

I really appreciate the kind words 🙏🙏 Thank you

@rockinrushing4791 2 жыл бұрын

So what happens if the wire doesn't seem to be turning the injector on and off? I have a P0204 code. 2001 Chrysler T&C 3.3L. Not the plugs wires or coil pack. Nor the injector its self.

@MasterjngReizowolf 2 жыл бұрын

Where do the probes go to check the voltage?

@danielsookraj3765 2 жыл бұрын

Hello everyone can I have a problem with a Nissan Titan 2004 one of my injector having 12v has I turn the key on

@kasundoph.788 Жыл бұрын

Hello sir i already change the injector for my cs 9 mazda din the engine is good in running now but the problem is i cannot delete the p0202...

@mikejohnson7768 2 жыл бұрын

Hi Gerald could the fault have been a loose contact from injector plug to injector causing low or intermittent connection?

@gouldney1 2 жыл бұрын

Yes, could also be that

@britesynth Жыл бұрын

Im experiencing this right now, idles at 1500rpm, step on brake brings it to normal 800, code reads P02CD 00 injector 1 limit, after couplenog resets problem will occur after couple of days, how do I fix this? Thanks!

@jat-justamaturetech-philpj8285 Жыл бұрын

I just experienced this. Rough idle after coming to a stop after driving 6 miles. I let it rest for a couple of hour's and restarted it. No problem,but my check engine light is on. So I drove it back home and is fine now but I put my OBD2 on and it shows #3 cylinder open circuit. I cleared the code. Seems to be running fine at a idle with acceleration. I did notice my fuel consumption is really bad. 53 miles and almost a half a tank. I did do a recent oil change and may have put a quart too much? Would this foul the injectors?? And what should I do next? I guess drive again for a bit and see if it fixed itself? What do you think?😅 UPDATE: I replaced all 6 injectors and put a heat shield kit on. Drove a few miles, jumped on the fwy about a mile, parked, turned off about 15 minutes, restarted, drove home, turned off, started a few times, no problems. Time will tell. FYI: ALL THE INJECTORS WERE ORIGINAL, 23 YEAR'S OLD!

@raviirajkumar3579 Жыл бұрын

hey bro can you help me put. so i have the PO2O6 code. i already replaced the injector and the coil but still have the same code.. 😭

@aaronlarsen8412 7 ай бұрын

Om getting a dtc 2 code in my car and my car drives completely normal but it idles at like 1600 ans bounces around down to 600 then back up. And if I slow down to a stop the rpms will drop down and then bounce back up kinda lunging the car toward a bit. Anyone know what this could be? I already flushed the engine oil and fixed an intercooler leak and replaced the rear o2 sensor but it still does it

@heatherjones3347 Жыл бұрын

Help I've been getting 0204 code and changed plugs distributors cleaned injectors mechanic test ohms and the noid part and can't find anything wrong. But as soon as I drive off it comes on within miles and runs horrible. Now it's still on but isn't running bad almost like a short somewhere but can't find it. We tried moving everything from 4 to the front figured we chase it but nope it stayed with a problem on 4

@sidewayzmike Жыл бұрын

Possibly the problem is internal to the pcm

@bcbjbggjh9102 Жыл бұрын

can u still have a bad injector with any codes ,

@mrbissi9377 Жыл бұрын

Hi Im having some issues with injector 6 circuit malfunction. After investigating and replacing spark plugs, coils. It still happens intermittently. A bit more investigating i have found when i lightly move the the bottom harnes on ECUi can replicate the injector 6 malfunction error. I have had a p0443 evaporative emission malfunction for about 2 years or so but still drivable and didnt have any issues. At present the car is still drivable and only notice is car rough idle for less than a minute and goes away. This only happens intermittently sometime doesn't happen for 300k. The car has 435000km These are the errors i have cleared in the past. The last 3 errors are more regular P0443-00 - Evaporative Emission Controll System Purge Solenoid Circuit Malfunction 18 - (Current) ECC Fault Logged 18 - (Current) Auxiliary Serial Data Bus Fault U2100-00 - CAN-Bus Circuit Malfunction 19 - (History) EEPROM Error U2108 (histroy) Can-bus No Communication with ABS/TC/ESP U2106 - CAN-Bus No Comunication with TCM (Transmission Control Module) P1632-48 Immobiliser Fuel Disable Signal Received p2500-00 - Alternator L terminal Low voltage p0206-00 - Injector 6 circuit malfunction p1668-00 - Alternator L Terminal circuit malfunction Has anyone had similar and was it a ecu. Should I go for 2nd hand or new? Thanks for your help

@BanditJustice 10 ай бұрын

My dad keeps getting an open injector code even though he had changed the injector twice and it still shows open injector what else could cause an open injector

@Patrick-Mckinney 6 ай бұрын

the connector , the wiring , the ECU its self (unlikely). Finding the issue is tricky

@PeterHernandez-lg2eh 4 ай бұрын

Po302 on a 2006 Subaru sti

@ampworldfan8133 3 жыл бұрын

@GerardBurkeBurkesGarage 3 жыл бұрын

🖐️

@ampworldfan8133 3 жыл бұрын

@darrellsmith5758 3 ай бұрын

I've got the same problem but ,ecm still says open circuit, and I've replaced the #2 injector

@shadowangel774 Жыл бұрын

Replaced my injector with a new one but the code came back, why?

@PimpingPassionsProductions Жыл бұрын

Please do more vz commodore videos please I beg U

@scottyd980 Жыл бұрын

Cover the intake in case ye drop your lucky charms

@GerardBurkeBurkesGarage Жыл бұрын

👍😀

@trucker7863 2 жыл бұрын

i have changed the injector but p0202 is not going

@Cheordig Жыл бұрын

How can you find what the resistance should be on an injector?

@GerardBurkeBurkesGarage Жыл бұрын

Best way is to compare it to known goods. Use the other injectors in the vehicle as a reference to compare.

@Cheordig Жыл бұрын

@@GerardBurkeBurkesGarage All four are reading 185-195

@fadzliebell90 3 ай бұрын

Hi brother how are you hope you’re doing well. I looked at your video many many time already. I got the same cases for my 2007 holden VZ commodore wagon v6 alloytec. Literally I follow and did the same as you did. The only difference I got compared to you is when the engine is in idling I got the same 13.5 voltage from both good and bad injector from connector harness thats confusing me. Then I tested directly from the ECM. The bad injector pin and good one. The bad one got just 386.5mv but the good one and the rest pin got 12.56v. I really really hope for your kindness to response and answer my issue. If it is 100% ECM failure I’m going to replace it. No more money got ripped off from mechanic 😢 Your number or your email would be nice too so that I can ask some enquiries.

@persiantech8274 Жыл бұрын

@Patrick-Mckinney 6 ай бұрын

electrical technician would be best but someone experienced can help did you get it resolved?

@persiantech8274 6 ай бұрын

I bought 4 injectors and still fault was here , I took out all 4 injectors and sent to specialist as last chance checking , finally we found out Two brand new injectors were faulty again which I returned. Eventually after replacing all four injectors the fault gone away. With regards