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Fuel Rail Pressure Sensor Diagnosis

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In this video I go through the process of verifying a bad fuel rail pressure sensor. The Specs and Initial diagnostic process is pretty standard. Always look at your shop manual for diagnostic information.
Hope you Enjoy:)
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JL's Auto Solution
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Disclaimer:
Please follow all manufactures safety information before proceeding with any repairs, failure to do so may result in personal injury or death.
The information provided within this Video
is for general informational purposes only.
While JL's Auto Solution tries to keep the information
up-to-date and correct, there are no
representations or warranties, expressed
or implied, about the completeness, accuracy,
reliability, suitability or availability with
respect to the information, products, services,
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Опубликовано:

26 авг 2024

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Комментарии : 130

@mike-yp1uk Год назад

Great video it's nice to see a multimeter being used properly.the decade box allows you to dial in resistance into the signal wire and they are cheap

@JLsAutoSolution Год назад

Great point

@aliasskipstevens4246 Год назад

Your voice sounds like an HVAC tech from another channel...either way you have good diagnostic skills. The best part for me was the repair completed side showing the signal voltage of 1.7. I believe I can diagnose my 0193 code better now thanks to your efforts. Thanks, man. Good job.

@JLsAutoSolution Год назад

Glad to help

@selvamg635 4 года назад

Awesome technical explanation with wiring diagram, test light and step by step diagnose without any skip. please continue this way of video presentation. thanks for your video

@JLsAutoSolution 3 года назад

I will try my best

@lewissmithmk7622 Год назад

This video helped me out big time!! I was seriously giving up with. 1.4 hdi, 3 days of time wasting tried this could not believe it!! removed the p0193 code , watched this had to go out at almost midnight to try it 😁 thank you!!

@JLsAutoSolution Год назад

Glad I could help. and thanks for watching

@damiropadobarglumskiperiod505 2 месяца назад

Did you fix i have 1.4 hdi circuit high eror for days

@mechanicmatt871 4 года назад

Nice use of a LED test light and live data, thanks Jeremy

@JLsAutoSolution 4 года назад

Glad it was helpful! any time.I haven't finished your video on the fuel pressure issue yet.. going to get to that tonight. have a great day

@verajavi12 3 года назад

For the 5volt reference u can use test light or 20ohm resistor to voltage load and if your 5volt remains it's a healthy 5v reference.

@kivet0n Год назад

A very comprehensive and methodical video of the troubleshooting process. Thanks for the straight forward detailed explanation of every step you were performing.

@JLsAutoSolution Год назад

Thank you

@reypaypa7494 3 года назад

I'm one of your fans I hope I can work to your shop someday because I want to learn more specially for you because your the best

@Paulhenri80 4 года назад

I have currently the same problem - I narrowed it down to the sensor for now but i will définitely test things again with your method. Thank you for sharing this.

@JLsAutoSolution 4 года назад

Did it work?

@Paulhenri80 4 года назад

JL's Auto Solution Sadly, no :( Injection module does not supply any current to the sensor. It will not be for nothing, i know more now :)

@davsky7280 3 года назад

What is the problem of the engine before the test, it can't start?

@hammerhead6537 4 года назад

Great video. Clear troubleshooting technique using the electrical schematic, very educational. Thank you.

@JLsAutoSolution 4 года назад

You are very welcome come😀

@MattyMind 9 месяцев назад

I don't know if anyone asked, but if someone could answer this for me are those voltage values basically for most cars or all cars. Or does this specific use 5? Just trying to see If I need to go searching for my Ford 500. Voltage values Yes, I'm still having a problem. Even after a place in the sensor which i'm starting to believe was junk from the store.

@duanedonaldson2262 2 года назад

It would be nice to see the fuel pressure sensor working showing different pressure voltages during the engine revving up, Thanks for a good video with schematic, diagnosis, codes, and some repair procedures, my first time here, a little more data on a running engine would have been a gold star.

@daliborjurjevic1979 2 года назад

i howe problem on 530d the car losin gas pedal and ticking rmp when i driving

@hasmukhchampaneri9668 6 месяцев назад

Very good well explained, I manage to understand most of troubleshooting process, just I am not able to work out the fix detail, please can you explain what you did, Thank you.

@francisdsa6790 3 года назад

Very good demonstration and good explanation thankful to you 💐👌👍🇦🇨

@amarabdelli487 2 года назад

Thanks for the video, the sensor connector has 6 wires, 3 wires for the pressure sensor and the other 3 wires why ?

@RobertRafai 3 года назад

I got same error code but on the end, was poor contact on computer ECU connector, that one with a lot of wires... check that too.

@miltonmagic3387 24 дня назад

Great video, thanks for sharing this.

@JLsAutoSolution 21 день назад

Thanks for watching!

@Albrtherrera10 3 года назад

I have the same issue but a low input p0192 code. Would my troubleshooting process be the same?

@stevenkietzke5582 4 года назад

Learned a couple of test with scanner danner Good video

@ivandrago2557 3 года назад

Find you on mechanic Matt channel I am subscribed now, keep doing methodical videos

@JLsAutoSolution 3 года назад

thank you... i will try my best

@budj7898 Год назад

Sorry old video but just found it. If you looked at parameters on the diag tool would the fuel pressure pid change when pulling the signal down with the led test light?

@JLsAutoSolution Год назад

yes it would, you could make it climb and fall if the wiring is good.

@jacobs3883 Год назад

Thank you for your help.

@JLsAutoSolution Год назад

Glad it helped

@MohammadShahen-jz9zt Месяц назад

مرحباً ماسبب ظهور اشاره خطأ بالحقن سيتان فإن بنزين مرسيدس محرك رينو + اشاره Stop اثناء القياده ومن ثم تطفئ وكل فتره اشتغل أرجو الإجابة وشكراً

@lutfilamat4215 2 года назад

What tool did you use to back probe the connect?

@MrHeffnerpf 8 месяцев назад

thanks. Just wondering where you got value for the expected KEKO sensor voltage?

@liquidh6344 3 года назад

Thanks. This was very helpful for me to find out whether it’s the ECM or the wiring/sensor. I’m also getting a P0193 in my 2009 Lexus IS250. If you have experience working on the IS250 for this issue, do give me a tip or two. Thanks, and Merry Christmas!

@sergiobuitron6736 4 года назад

Just found your channel. Awesome Job, keep it up. Congrats!

@JLsAutoSolution 4 года назад

Thank you

@user-ky7ty3ie1x 8 месяцев назад

Hi ive got po193 would that couse active short on my 10a fuse no crank no start effectively

@nigelclark7360 4 года назад

Very good we'll explained

@JLsAutoSolution 4 года назад

Thanks and welcome

@AaBb-kk2wn 3 года назад

you are the best thank you

@JLsAutoSolution 3 года назад

You're welcome!

@tmanda323 3 года назад

With all respect to JLs Auto Solution but ScannerDanner is the best.

@jamesself2409 10 месяцев назад

Hi, what is steps on erase engine code po193 with ya301 scanner? gas not leaking

@Nix_sound 3 года назад

Very helpful, thanks

@JLsAutoSolution 3 года назад

You are welcome

@s3nata16 11 месяцев назад

Hello i would be happy if u help me with my issue bcs no one could do so far.i have dtc p0090 p0091 p0092 popping and so far I've replaced fuel filter fuel pressure regulator fuel rail sensor and fuel pump has been removed and checked but the problem still remains i have checked voltage on the plug its 2 wire's one is shown 8.8volts engine not running so is this a bad ecu or something else thats a fiat ducato 2.3multijet engine is stalling when its driven thank you in advance🙏

@DJ-tn7vj 2 года назад

Bro excellent work. I use jarhead 5volt ref box to pull it down but SD did teach us that on his premium channel.

@JLsAutoSolution 2 года назад

thank you. We all get our information from the same places, I read this in a book and then seen it on one of scanner danners videos, then tried it out myself lol.. and it works great.

@damiropadobarglumskiperiod505 2 месяца назад

I have FRPS circuit hight eror.engine cant start but at same time i have fuel pressure readings that goea up to1200 when cranking.but i am going to perform the test as shown

@JLsAutoSolution 2 месяца назад

it depends on which vehicle. there can be either 2 sensors. if there is a gdi system there always be one at the fuel rail(which is for the hp side) and another for the low pressure side. the circuit hi code is more likely due to wiring or a sensor. thanks for watching

@user-ky7ty3ie1x 8 месяцев назад

Hi what 0.003 Oms compering to open means

@paul914 3 года назад

Top video mate!

@JLsAutoSolution 3 года назад

Thanks a lot!

@shervzmedz8546 8 месяцев назад

Did u change the sensor ??

@puckhead7008 2 года назад

JL's, nice video. I subscribed :-) Hey, I'm ready to start up an '03 Mercury Marauder that I had the engine and lots of other items rebuilt/replaced on, including the fuel pump. I added a fuel pressure pod gauge that has a sender that sits right on top of the stock fuel rail pressure sensor (frps). Anyways, I'm not getting the pump to run unless I give it 12 volts from the battery. When I use the fuel pump driver module and the PCM , the pump won't run. I'm trouble shooting the frps and your video helped. I get 5V, 5V, and 12V on the three pins when the connector is disconnected...like you do. I get 5V, .5V and 12V when the key is on and a pin is stuck through the weather pack like you did (great trick!). Is this .5 in the right range for a completely depressurized system? Also, I guess I do not know if .5 volts would be for relatively high pressure or relatively low pressure...do you know? Thanks so much! :-)

@JLsAutoSolution 2 года назад

Thank you watching and the question. So i did a little research and found that at KOEO that the voltage should be roughly 0.2V. So that means that low voltage equals low pressure. Is 0.5V something to be worried about? Since your vehicle is not running I would say not at this time.. I would keep focus on getting the vehicle to run before going towards a FRPS Fault. I would check to make sure the inertia Switch is not open- this will cause no power to flow to the FPCM- it is located in the truck on the left support. Thanks for watching.

@edgarvazquez1128 3 года назад

I have the same problem in my audi q7 code p0088 fuel rail pressure high

@davesterl 4 года назад

Nice bypass with the LED Jeremy

@JLsAutoSolution 4 года назад

Thank you. I learned that 3yrs ago.. and has been a great time saver ever since.

@rodvan-zeller6360 2 месяца назад

Good job. One thing, how can you concentrate with loud music in the back ground?

@JLsAutoSolution 2 месяца назад

I cant, but when you work in a shop with multiple people, you dont get to make the decision, so i just live with it. thanks for watching

@rodvan-zeller6360 2 месяца назад

@@JLsAutoSolution Thank you for the reply.

@TT-cv7rx 3 года назад

Thank you for this great video.

@JLsAutoSolution 3 года назад

Glad it was helpful!

@Studio-Nelly-Ri 5 месяцев назад

thx,helpfull

@smartdiag7136 2 года назад

Thanks for video

@JLsAutoSolution 2 года назад

Most welcome

@drcod3r329 2 года назад

can you tell me which diagram software you using if dont mind

@JLsAutoSolution 2 года назад

This was the oem wiring diagram. you can get this off of mitchel or alldata or identifix or motologic

@FrankRizzo707 6 месяцев назад

Should any of the wires in the connector have power when testing with a circuit tester? Car on engine off.

@JLsAutoSolution 6 месяцев назад

12v no.. power is fed through a 5v circuit, so withe the connector connected you should have a 5v a ground and a signal wire, the singal wire will vary depending on the pressure in the system

@Actionshorts247 3 года назад

Well done brother 👍. I had two codes at the same time on my range Rover sport 2010 . 1, P0088 fuel pressure too low 2, P0087 fuel pressure too high Please could that also be rail pressure censor ??

@JLsAutoSolution 3 года назад

In all situations it is highly suggested to perform a thorough diagnostics. the last thing you want is to replace a component only to have the same issue afterwards.. thanks for watching.

@Actionshorts247 3 года назад

@@JLsAutoSolution thanks stay safe

@menradurriza8034 Год назад

thanks

@JLsAutoSolution Год назад

welcome

@kyleriley7362 3 года назад

Hey JL’s Auto Solution I have a quick question. You said the signal wire should be 5 volts like you showed. I saw elsewhere that it should be around half a volt with the engine off and mine is .5 - .6 volts. Is this correct or does every car vary? Thanks

@JLsAutoSolution 3 года назад

Hi kyle.. So first off thanks for thw question.. Always check service data for your vehiclw. Now.. All frps That i have tested have been between 0 .6-1v(signal wire) .. Key on engine off and sensor connector plugged in( connected) and 5v when disconnected. Now you shod always have a 5v feed and a sensor ground. I mention this at the 2:50(ISH)mark.. THANKS for watching..

@kyleriley7362 3 года назад

@@JLsAutoSolution awesome thanks for the quick reply. So yea I’m definitely losing voltage somewhere on the signal since it’s only .5-.6 unplugged. My ground is 9v and reference is 5v (unplugged)

@gulag8735 Год назад

Only of use if you've good understanding of systems and tools

@MuhammadRafiq-is3fd 2 года назад

Can we bypass the rail pressure sensor by looping those signal wire and supply wire ?

@JLsAutoSolution 2 года назад

no, if you try to bypass the signal wire you will get 5volts or 0volts, the sensor needs to be use for proper fuel delivery.

@MuhammadRafiq-is3fd 2 года назад

@@JLsAutoSolution 👍

@EdgarLopez-ik3yk 4 года назад

Awesome vid keep up the good work

@JLsAutoSolution 4 года назад

Thank you

@ridwaanessa1886 3 года назад

Hi , would code P2291 be referring to the same sensor?

@timmoy3037 3 года назад

Great Video ! may i ask if i can still use the bulb test light when doing the bypass ? :)

@timmoy3037 3 года назад

not the LED one ?

@JLsAutoSolution 3 года назад

using an incandescent or and L.E.D test lamp will give you the the same result. just be aware that the voltage that will will be dropped will be greater with the incandescent test light.. Also note that there at 2 styles of signals out there with bias voltages.. one is voltage-- 12v or 5v monitored signal or a ground monitored signal.. you need to test in order to be certain which system you have.. thanks for watching..😁

@timmoy3037 3 года назад

@@JLsAutoSolution wow thanks for responding ! but LED is better for bypassing ?

@iankelly2110 3 года назад

well done nice job

@JLsAutoSolution 3 года назад

Thank you! Cheers!

@iankelly2110 3 года назад

@@JLsAutoSolution so its ground side switched yea the signal wire

@lanaya6261 3 года назад

So my sensor is dead! Ty so much!

@JLsAutoSolution 3 года назад

You are welcome

@upkarbath 4 года назад

👍👍

@hpfza 3 года назад

Can you test for continuity on the sensor itself?

@JLsAutoSolution 3 года назад

you can, but it will be in the m.ohms reading if im not mistaken, unless there is a straight short to ground or 5v circuit, which then would give other issues. thanks for watching

@eddygranja8315 2 месяца назад

👍👍👌👌✅️✅️

@JLsAutoSolution 2 месяца назад

glad you enjoyed it.

@RickyPisano 3 года назад

I'm pulling 274.21 psi on my fuel rail pressure on my Ford 3.0L DOHC Duratec V-6 at idle. I need to check it with key on engine off. No engine light. Seems high to me.

@JLsAutoSolution 3 года назад

What vehicle is this.. And year..

@RickyPisano 3 года назад

@@JLsAutoSolution 2005 Ford 500 Limited 3.0L Duratec DOHC V-6.

@JLsAutoSolution 3 года назад

So 240-485 kpa is normal which equals to 30-70psi.. Check your pressure setting and make sure the scan tool is not reading it in kpa.

@RickyPisano 3 года назад

@@JLsAutoSolution Thanks. It WAS k/pa. I had my scanner in text mode and for some reason it was reading psi AND k/pa the same... as k/pa. I switched to the guage and it's about 50/60 psi. Appreciate the help man!!

@RickyPisano 3 года назад

@@JLsAutoSolution Upon further investigation of my lean condition, especially in Bank 1, I found oil in the spark plug well on cylinders 4 and 5, Bank 2, on my Ford 3.0L DOHC Duratec V-6 engine. Cylinder 6 was clean. I haven't been able to check Back 1, the 1, 2 and 3 cylinders because I can't even see them. Against the firewall. I need to remove the Intake Manifold. So I know at least 2 cylinders on bank 2 were misfiring. I'm not sure how this would cause a lean condition in Bank 1 though. I can't imagine Bank 1 looking like this because the car ran pretty good. Idled a bit rough but still not as bad as I'd have thought this would make it. At any rate I found what could possibly be causing everything. What a pain. This car was meticulously maintained and is in perfect condition. Just a shame. I have my work cut out for me now. Freezing out now too!! Any advice would be appreciated!! Thanks a million man. Your help has been appreciated!!

@ningbohenshineprecisionmac2281 Год назад

hello, we are the original manufacturer of the rail pressure sensor,

@aymenmohamed1134 Год назад

👍🏻👍🏻👍🏻

@leepeezy 2 года назад

My sensor signal wire is 3 volts ignition on plugged in so 4.9 volts 3 volts ground is something wrong? Getting low pressure codes and car isn't running.

@brandinfisher 2 года назад

Can I just take my car to you lol

@JLsAutoSolution 2 года назад

Lol. I dont have a place of work, I am a teacher and own a mobile diagnostic business.😁

@kermets Год назад

6:14 lucky you didnt blow the ecu up putting 12 volts down the 5 volts ecu power side......

@JLsAutoSolution Год назад

The meter was reading a voltage drop. No cause for concern since I was set to check voltage and not amperage.

@illahboii225 Год назад

I was braking an my car killed like wtf

@juanlanda2441 3 года назад

I noticed these newer engines that have a FRP sensor don't have a Schrader valve to test actual pressure. So why don't you explain in your diagnostic how much voltage is normal and how it's suppose to fluctuate depending on the actual pressure? You went straight to test if the wiring was shorted. Isn't the scanner suppose to tell you the voltage? Another thumb down 👎 test your fuel pressure first guys

@JLsAutoSolution 3 года назад

I agree with what your saying... if this was a fuel pressure related issue which then the pcm would have set a code for fuel pressure low or high. Now since the dtc that was in the system was fuel pressure CIRCUIT high, there was no need to go towards the fuel pressure. the pcm was seeing a higher than wanted voltage on the signal line due to the sensor being stuck or open. and thats all i was showing in this video.. thanks for watcing