Fuel Pressure Sensor Diagnostics | Tech Minute

Andrew Markel explains what a P0191 code means, and how to ensure an accurate diagnosis.

[mobileheavyequipmentrepair]

100 percent I’ve encountered so many problems with this. Well said! Great video!

[richardmckibben]

That's nice but do you have some data as to what makes the sensor good bench mark to work from this thing won't start and the voltage to the injectors show signal but with low voltage if pressure trumps voltage what is the balance readings look like

[cosminpintilie]

What if got same simptoms and no error codes?

[BoHoGoJo]

Very informative. I'm having difficulty with a 99 Mercury Gr. Marquis. I stalled out about 6 weeks ago. Replaced fuel pump/fuel filter. Running but started making wailing sounds so replaced IAC valve. Car ran great. Fuel mileage went up. Car stalled out again. Thought maybe inertia switch tripped. Nope. I bypassed switch just in case. No help. Replaced Fuel Pressure Regulator. The fuel line to rail was completely blocked. Replaced it..Getting fuel to rail but pressure seems too low. Will sometimes barely start. Run rough. Stall out. Thought I may have burned out new fuel pump on clogged lines. Replaced it. Checked ohms on spark plugs and injectors. All are in range. Still won't start. Have not checked pressure at rail yet. Plan too get gauge tomorrow to check. Can you offer some guidance. This is my only vehicle and no $$ for new one. Has been dependable until recent fuel system issues. Only throwing O2 sensor code.

[realgamerg]

I’m getting a p2541 code on a 08 maybach the sensor was ohm and reading good what can be the problem

[osbaldoesquivel]

What about 29F2, my 09 535i keeps sending this fault code I'm buying a hpfs next and hopefully that fixes the problem

[leo]

Any idea of what’s a p119A upper limit exceeded

[loveSparklesonU]

I have a question.my 2001 is saying valve or selinoid.i replaced both and 2 vacuum lines.and the fuel cap cause fuel cap light and engine light is still on.some times it starts other times I have to shoot fuel starter in the intake.it will die at idle sometimes also.no other codes.any

[elektrikman]

What are the values it should be reading?

[anthonybaksh]

Morning I have 4g93 single cam and the #3 sparkplug alone fowling the compression test the injector good new spark plug and wires what u can make of it

[akcarelectical]

Df885 code for Renault duster what Rison please tell me

[tonydesousa]

I have a 2015 Chev Malibu with 177000 km and it shows code 0089 and code
0016. Code 0089 says it's the fuel pressure regulator and the 0016
says it's the

[rsanchez]

Hello. Thank you for your video. Can you give me your opinion on our Enclave issue? We have a 2011 Enclave CXL 2WD. It has 110K miles. Like a month ago it reduced speed on highway and showed "Reduced engine power", when my wife took it to Autozone for codes it showed several misfires. I researched the issue online and ended up cleaning the throttle vary and it worked perfect. The engine light disappeared when I reset the computer. No more issues until 3 weeks ago when were driving on the highway and the same situation happened. I took it to Autozone and the code was "misfire on injector 5". After I kept driving it the engine light disappeared by itself and the car was working fine until today. I was driving very slowly on the park and the same message came to the board, the car lost power and a lot of white smoke. I took it to Autozone and the code read misfire on injectors 1, 3, 5 and issue with fuel pressure regulator. Do you have any idea what could be the issue with this car?

[onrdetailingnews]

I would replace the fuel pump first then the sensor

[jonaldsabulao]

Sir can you help the problem of me car because if the sunction valve remove the oil sell the engine are start but wen the oil sell can't remove the engine can't start

[wilbursamarita]

sir ca you help me i have a hyundai starex diesel crdi, when i take it to the mechanic and scan, it show a code p0191 or fuel rail sensor low, , my car is showing low power, engine check light, hard start. when we replace it with a new one, and we try to start it wont start, ad shows code p0193, pls help me were should i look or what should i test

[udzejl]

If you have car in a shop and you need this video ao you can fix it please close that shop

[ricksop]

Terrible did not show how to test it information is for mechanics not for the average person!

[sally]

That isn't helpful at all!
Won't be buying anything from your sponsor, and will advise everyone I know and meet to avoid them👍