Fuel Rail Pressure Sensor Diagnostic | Fix P0191 Fuel Rail Pressure Circuit Range/Performance

In this video I show you how I test the fuel rail pressure sensor when there is P0191 Fuel Rail Pressure Sensor Circuit Range/Performance fault code. I perform the test on a KIA Rio 2012 with GDi fuel system. During diagnostic, I explain the wiring diagram for sensor, I explain the step by step diagnosis on the wiring and at the same time I show you how o find the wires and pins on sensor connector and PCM connector. I also explain how to test the sensor operation by monitoring the live data on scan tool.
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Disclaimer:
Any information contained in this video is just the understanding of “Automotive Diagnosis: Cars Repair & Training Guides” and it is not an official guide or reference, so everything provided in this video is just a share of our experience and understanding and they are provided as a courtesy for your reference only. So, if you are using any part of this video, use the information at your own risk. We highly advise you to check the manufacturer owner’s manual before performing any act of removal, diagnosis, inspection, or repair on your car to know about what you are authorized to do on your car, what the correct and legal procedure is and what risks might be involved, also viewers are strongly advised to consult a licensed person before any sort of inspection or repair. Due to the factors beyond the control of “Automotive Diagnosis: Cars Repair & Training Guides”, we cannot guarantee against improper use of information or tools or systems, or the procedure provided. “Automotive Diagnosis: Cars Repair & Training Guides” disclaims any damage, injury or loss caused by your decision to follow the steps provided in this video.

[@AutomotiveDiagnosis]

You might be interested in watching the following video too: MAP Sensor Diagnostic | How to Test a MAP Sensor with Multimeter & Scan Tool kzbin.info/www/bejne/bH2qc4mrd6lrl7s

[@chafiqjalal6789]

Excellent video I can't believe this content is for Free

[@AutomotiveDiagnosis]

Hi my friend. I’m glad you liked it

[@darwinmonsalve925]

I can't leave this KZbin channel without leaving a comment. "My English is very basic, but I manage to understand what it says, it has a magical talent, to explain every detail of the car. This KZbin channel is super, thank you for sharing all your knowledge in a very easy and fast way, Blessings for ri and your channel. Thank you thank you.

[@AutomotiveDiagnosis]

Hi my friend. I’m very grateful for your kind words and support. It’s great to see that videos are helpful.

[@hichamsaid9472]

Thank you so much , usually after checking voltages of the sensor I use air compressor and a scanner to read the air pressure injected in the sensor.

[@AutomotiveDiagnosis]

Thanks for sharing your experience.

[@Franklinveterinarycenter1of4]

WOW! Awesome youtube channel!!!!!! Better than SMA, Rainman Ray, motorcity mechanic, Kio diagnostics. I'm am thoroughly impressed.

[@AutomotiveDiagnosis]

Hi my friend. I’m very grateful for your amazing support. You just gave me the energy to make more and more content.

[@ROSEY_THEFOX]

Thank you brother for a clear explanation.

[@AutomotiveDiagnosis]

Glad you enjoyed it

[@mohammedsuboh1420]

Your method is good and simple in explanation. Continue with other electronic parts... Thank you.

[@AutomotiveDiagnosis]

Sure thing my friend 🙏🙏👍

[@Josh-k4q4o]

Very informative approach to diagnosis

[@AutomotiveDiagnosis]

Glad you liked it

[@messaseverin8694]

u're the best, u're my boss on u tube

[@AutomotiveDiagnosis]

Thanks my friend. I’m glad you like the videos.

[@Tony-mg8eb]

Brilliant video

[@AutomotiveDiagnosis]

Thanks

[@sheerwillsurvival2064]

Excellent video as always 👊🏻👍🏻

[@AutomotiveDiagnosis]

Thanks for your support my friend.

[@HafizIbrahim-j8t]

Thanks for this huge effort..

[@AutomotiveDiagnosis]

Thanks for watching

[@salehshoo2376]

Thank you so much

[@AutomotiveDiagnosis]

Thanks for watching bro

[@lupedelacruz4152]

Thank you amigo I did have one with a low pressure sensor regulator code but it turned out to be the high pressure pump without the code for the pump😢

[@AutomotiveDiagnosis]

Hi my friend. Thanks for sharing your experience. Pressure regulator is located on the high pressure pump. Pump itself works mechanically and does not have any specific code. We check the pump condition by monitoring the pressure regulator and pressure sensor.

[@jeffhong2135]

Wonderful

[@AutomotiveDiagnosis]

Thanks 🙏

[@robertmobileman8304]

Might be worth showing how you load test the wires, might be a useful video for the viewers , good work

[@AutomotiveDiagnosis]

Sure thing my friend

[@amarabdelli487]

Excellent video thanks

[@AutomotiveDiagnosis]

Glad you enjoyed it

[@h..h...9589]

wonderful

[@AutomotiveDiagnosis]

Thanks my friend

[@Mohsen-mk3ud]

Thanks for the good video

[@AutomotiveDiagnosis]

👍👍👍🙏

[@cartech5015]

Thanks bro

[@AutomotiveDiagnosis]

Thanks for watching

[@tabitnabil8771]

thanks keep up

[@AutomotiveDiagnosis]

Thanks my friend 🙏🙏

[@fixitfirst7090]

Thanks boss

[@AutomotiveDiagnosis]

Thanks for watching

[@baskaranr7638]

Super

[@AutomotiveDiagnosis]

👍👍👍

[@Max-j2r]

❤❤❤❤❤❤

[@AutomotiveDiagnosis]

👍👍🙏

[@anthonynicholls9415]

👍👍

[@AutomotiveDiagnosis]

👍👍

[@NicholasBartholomew-h8c]

Pls what is the name of the scan tool used(make and model). Also, can I buy only the dongle and use it with an android tablet? Thank you

[@AutomotiveDiagnosis]

Hi there, this was Launch X431 Pro3, and it comes with the tablet, as far as I know, they don’t provide the software alone.

[@tnamen1307]

Sir, can you please make a new video about this? In modern cars, say, Toyota Glanza, Taisor and Maruti Baleno and FRONX, there's 12V at any door switch when the door is closed. And after 20 seconds, it drops to 7V and remain constant 7V. When door is opened, it is constant 0V. Same case for all the remaining 4 doors including dicky. Can you please explain with wiring diagram why the voltage drops to 7V from 12V? What's the significance of this delay about 20 seconds? Why not remain 12V as in previous cars like i20 etc etc?

[@AutomotiveDiagnosis]

Sure thing my friend

[@tnamen1307]

@@AutomotiveDiagnosis I'm very much keen to know what's the ADVANTAGES of dropping to 7V rather than maintaining at constant 12v?

[@mukwayamugoya8139]

Sir where can I buy a repair manual for Toyota 1kd ftv model 2012

[@AutomotiveDiagnosis]

Hi my friend. I might have it, but not sure where it is right now. Try this website: cardigan.com Note: I don’t know anyone from this website, But as I see, they have many manuals and all are for free.

[@AutomotiveDiagnosis]

Hi my friend. Please tell me the exact model and model year, I see what I can do.

[@Alfonso749]

🙏

[@AutomotiveDiagnosis]

👍👍

[@autokiaa9563]

🙏🙏🙏

[@AutomotiveDiagnosis]

👍👍

[@RichieRich845]

Why is it that you have a code in every video, do get any problems that don't give you a DTC ? I have been chasing a fault with my car for months, I bit the bullet and went to the dealership thinking they are going to fix it, 20 minutes later they said no DTC and gave two quotes one for replacing the EGR and one for valve clearance, had they opened the bonnet they would have seen the that I already replaced the EGR because it is still shinny. $1850. to do a Valve clearance, I just came home and did it myself . I tried a local shop and they didn't want to touch it, I think it was too hard for them. Did it fix the problem no. Mitsubishi Triton MQ 2015 2.4L diesel 133 000km every time I come to stop the RPM drops to 600 and then goes up to 600 and the idle is rough. When in park the AC is on it does the same thing when it cycles. replaced the EGR because of vacuum leak through the pintle needle, replaced the turbo cartridge because of vacuum leak at the lever that moves the vaines(VVT), leak at the DPF sensor 1 and DPF first joint to exhaust pipe, donut gasket was damaged at the factory when installed. Tested the following MAP MAF OCV Cleaned and tested outside of car VVT Solenoid EGR solenoid DPF sensor DPF Temperature sensor 1 and 2, couldn't get to 3, but OBDII scan tool the readings are good. Three wire camshaft sensor removed and cleaned, Three wire Crank Angle Sensor, I haven't got to that yet and I sold my oscilloscope from the1990s that was the size of my desk so I can't test it. Tried new used ECU with the latest software got the same thing and mine has the new software New throttle body about a year old New EGR New turbo cartridge Any ideas before I buy a oscilloscope? Thanks

[@xarslanxahmed578]

40 bar is nearly 600 psi it should say 40 psi if I am wrong i apologise.everything else was brilliant

[@AutomotiveDiagnosis]

Hi my friend, it’s actually 40 bar. It’s very high pressure because injector injects the fuel inside the combustion chamber, so it must be very high.