Error Code 1272

[pasniny]

Hi Guys

I need some help with error code p1272
All i can find online is P1272 High to Low Side Open - Cylinder 2 .

Ns paj 3.2 Diesel auto


Thanks

Yann

[Avanner]

Hi yann

The correct terminology for Mitsubishi Pajero fault code is 'DIAGNOSTIC ERROR CODE'
I suggest you 'google' something like 'diagnostic error code Pajero'

The 'P1272 High to Low Side Open - Cylinder' you quoted, I don't think was for a Pajero. The nearest I can come up with was 'P1272 Air/Fuel Ratio Sensor 1' for a Terracan...which I think has a Mitsubishi engine....why do you not go to a Mitsubishi dealer to have diagnosed with a MUTT tester?

Roy

[andy1]

A DTC P1272 is a Pressure limiter malfunction its probably a failed SCV take it to your dealer they can fix

Regards
Andy1

[pasniny]

Thanks Guys will take to mitsu wanted to check if anyone else has had the same issue

Cheers

[Alec]

Yes, its not the SCV though, I have replaced it with a new one. The car made a loud snap or crack noise then limp mode & code P1272. Any ideas? Rocker arms are all fine but do need adjusting.


Alec.

[BruceandBobbi]

P1272 Pressure limiter open valve abnormality.
P

http://www.service-engine.com.ua/webroot/pdf/MITSUBISHI%20PAJERO%204M41%20ENGINE.pdf

Scroll to section 8. It has the codes.

[Alec]

Thank you for posting the link!


As you say the code for P1272 is "Pressure limiter open valve abnormality" I was not sure what this meant so I adjusted the tappet valve clearances and the code disappeared.


I now have P0089 which shows up as
"Fuel pressure regulator 1 performance (Pressure limiter valve opening abnormality"

I replaced the Suction Control Valve before doing the tappets, so I can't understand why this code is now coming up, I might sand out the old one and put it back in or risk a huge bill by asking Mitsi main stealer to look at it.......

[Alec]

It was a blocked Manifold pressure sensor pipe.
It was blocked at the manifold where the flexi pipe joins to it. Unblocked it with some wire, all codes clear now!!

[psproule]

The joys of a functional EGR. Time for a full manifold clean. This sensor got moved in later models due to this problem an was also the subject of a feild service bulletin in AU where if you grumbled enough you got a retrofit of the later one.

Pat