hamooduae

Hello aLL , i live in abudhabi-dubai
The garages where i live are very normal in inspecting and trying to read the faults of the car.

I installed ppe headers,after installation o had the code P174 and p1170.
I have sikky o2 simulator from a year !

The garage guy told me clean the injector which iv done it .no use !!!! Still same code

He disconnected the simulator to see what code i get ! I got the oxygen sensor codes with p174
And a new code which is p1236 !!
And now what he is saying its the engine ecu !!!!

Will a damaged O2 sensor cause this ?


Can someone help me here please !!

isfvss

This is getting a bit to common contact PPE and ask there advice adding extractors does not effect injectors, its not your ECU it is a bad readings from the O2,s which is very common after fitting after market exhausts. Maybe the Sikky sims are conflicting with your setup, take it to a good shop and get it fixed let us know what goes on cheers.

hamooduae

Iv took the garage at dyntrade ~ lexus dealer .


They couldnt find the issue of p1236 .high fuel pressure .
the car works good ,after 5-10 minutes the code for P1236 appears and car seems there is a disconnecting and keeps working normal

Ppe have replied me and they will be sending new extensions for system to rich p174.

But i am not sure about p1236 what is the reason. whether it may be from the headers Extensions .



What may the reason for p1236 be ?
they told me they have checked the wirings everything seems to be fine .

Manh3

iTrader: (1)

Does driving with a cel harm the engine or limit its ability to get up to normal speeds?

Joker4096

iTrader: (2)

Fuel pressure regulator not working correctly?

Pushtape

Too many things can trigger it to say with any certainty but that is why you invest in a code reader

flowrider

iTrader: (9)

Not really, but the engine will be in limp mode. Your transmission will never go into first gear and performance will be limited.

Lou

hamooduae

I have to check !
I think when they cleaned the injectors they did not keep it back correctly or damaged it ..!!
They have checked all the ecu wiring ~ no issue

hamooduae

here is a video of my car .
the garage says mostly maybe the fuel pressure regulator .
i drive the car , but once you just try to little accelerate , the car seems its not getting enough gas.


and ppe have sent me new extensions for the headers.

Joker4096

iTrader: (2)

I wonder if the fuel pump is going out? If it's not the regulator.

lobuxracer

iTrader: (2)

Did someone work on the fuel system recently? If you connect the two hoses going to the HPFPs wrong, the engine acts like this. AMHIK. Take a look at the online engine bay pictures and make sure your hoses look the same. I'd bet they don't.

Joker4096

iTrader: (2)

i remember reading your thread on when you did this. Makes sense.

hamooduae

After one month of trying to solve issues
P1236 was solved by changing fuel regulator
But still i am getting p174 and p302,300 now !!

Ppe have sent me new extensions, but still nothing seem new ! Still same issue !!

New codes which came are p302,300

+p174 which is wasting alot of fuel i guess

Joker4096

iTrader: (2)

P174 is lean condition, the p300,p302 codes are misfire codes. cylinder 2.

hamooduae

What are the possible causes guys for p174
I have installed new extensions

Leak ?
Intake problems ?

On the right side of exhaust tip
More smoke on the tips !!

Yet i did not install my simulator ..

I have changed headers o2

Is it possible its the exhaust sensor. ?