Intermittent Engine Faults

[yloops]

Hi All,

Was wondering if you might be able to help me here. Car has the deeaded engine light come on intermittently causing it to judder and lose power at times. However at other times it runs relatively smoothly with no issues and the light disappears.

I've scanned the car with Peugeot plannet and got the following back:

Intermittent fault. Injextors control 4 short circuit to positive
Intermittent faul. Petrol high pressure regulation fault Fuel rail pressure too low
Intermitten fault. Misfire on cylinder 2
Intermitten fault. Misfire on cylinder 3
Intermitten fault. Misfire on cylinder 4
Intermitten fault. Misfire on undertermined cylinders
Remote intermittent fault. Mis fire detected dfuring low fuel level
Intermittent fault. Oil pressure regulation Pressure too high in relation to the setting


Does any one have any ideas what the issue(s) might be. I have tried to browse through the forums, and was thinking potentially coil packs and spark plugs ( or at least praying). My other thought is that it could be the HPFP. I'm praying it is not the timing chain, or other more serious engine related issues. Any help would be greatly appreciated!!!

 

[neilgsxr69]

Most go down the coil pack/plug route but they wouldn’t all fail together so I would plumb for the HPFP, if you do buy a replacement make sure your not buying a cheap Chinese refurbed unit.

 

[yloops]

You're a legend, how are HPFP that get refurbed. Was thinking of sending mine off to get serviced?

 

[Kerr]

You're a legend, how are HPFP that get refurbed. Was thinking of sending mine off to get serviced?

I've had the HPFP in my R refurbished off Mike on eBay. The car runs spot on.

 

[yloops]

Solid thats exactly who I was going to get it done with. Will take it out and get it sent out today.

Any chance this issue might be related to a coke build up in the valves? Just trying to think of all angles!

These engines on the Z's are have so many known issues, wish I could ultimately swap in a different one!

 

[Pedro]

You may need a new Oil pressure switch/sensor ? This fault doesn't usually flag up with fuel related issues unless its been stored in the ECU

 

[Dencole]

Hi All,

Was wondering if you might be able to help me here. Car has the deeaded engine light come on intermittently causing it to judder and lose power at times. However at other times it runs relatively smoothly with no issues and the light disappears.

I've scanned the car with Peugeot plannet and got the following back:

Intermittent fault. Injextors control 4 short circuit to positive
Intermittent faul. Petrol high pressure regulation fault Fuel rail pressure too low
Intermitten fault. Misfire on cylinder 2
Intermitten fault. Misfire on cylinder 3
Intermitten fault. Misfire on cylinder 4
Intermitten fault. Misfire on undertermined cylinders
Remote intermittent fault. Mis fire detected dfuring low fuel level
Intermittent fault. Oil pressure regulation Pressure too high in relation to the setting


Does any one have any ideas what the issue(s) might be. I have tried to browse through the forums, and was thinking potentially coil packs and spark plugs ( or at least praying). My other thought is that it could be the HPFP. I'm praying it is not the timing chain, or other more serious engine related issues. Any help would be greatly appreciated!!!

Hi yloops:
This may not be the answer but I thought i'd mention it. About 6 years ago I had a RCZ 2011. On my way to Asda the engine just died and went in to limp home mode. I got it to Asda and called the RAC. It turned out the fault was with the wiring loom. Can't remember exactly what it cost but I think it was around a few hundred pounds to fix via Peugeot dealership. Hope this helps... Good luck.

 

[yloops]

You may need a new Oil pressure switch/sensor ? This fault doesn't usually flag up with fuel related issues unless its been stored in the ECU

I think it might be a genuine issue. The rocker cover has been leaking so going to get that replaced at the same time. Im hoping thats the reason for that error.

 

[yloops]

Hi guys thought I would provide an update.

1. Reconditioned the HPFP
2. Replaced Coils
3. Replace Spark Plugs
4. Replaced Rocker Gasket Cover

Notes:

• There was some rust on at least two of the coil packs
• The spark plugs were black at the tip
• Appears there may have been a split in the rocker cover gasket for the coils, on the right two coils ( there was a slit through the gasket)

However:
I split the breather valve (Oil Vapour Hose) on the left side of the engine and had a pain put back on the turbo Intake pipe (but sorted that in the end)

Results so far:

The car runs infinitely smoother than previously.
Fan is on the moment the engine is started on full blast and until around 20 minutes after the engine is turned off.
The previous codes still remain, but given the breather pipe situation I have not been able to drive the car for an extended period and see if the codes disappear.

Therefore remaining faults:

• P15A6 - Intermittent fault. Oil pressure regulation. Pressure too high in relation to setting.
• P0271 - Intermittent fault. Injectors control 4 short circuit to positive (What could the be?)
• P2279 - Fault does not have an after sales reference (New)
• P0087 - Intermittent fault. Petrol high pressure regulation fault fuel rail pressure too low –
• P1338 - Intermittent fault. Misfire on cylinder 2
• P1339 -Intermittent fault misfire on cylinder 3
• P1340 - Intermittent fault misfire of cylinder 4
• P1336 - Intermittent fault. Misfire on undetermined cylinders
• P0172 - Intermittent fault. Mixture regulation fault. Mixture too rich (New)
• P0313 - Remote intermittent fault. Misfire detected during low fuel level

There two new faults P2279 and P0172 I am hoping that these relate to the split pipe.
The Oil pressure regulation switch, I am hoping is the oil pressure switch/sensor which you guys mentioned and will get swtiched.

I am however concerned about P0271 - now that I look at it I don't think we've seen this fault on the forum have we? What could it be? Could there be a genuine issue with Injector in number 4? The car itself does feel like its running smooth.

I have taken the car to a peugeot specialist, since I cannot sort the breather pipe out myself. I mentioned getting the Timing Chain tensioner bolt checked and tightened but was told it was quite a major job to get to it and would have some cost implication and that it was likely not worth it ( I am concerned as to whether there may be other leaks)

Thoughts from everyone that has helped so far would be greatly appreciated.

 

[Pedro]

P2279-0172 Air intake issue
P0271 Injector 4 circuit high ? swop over the coil pack for that cylinder see if there is any difference? it may also possibly be a wiring issue other problems occur when the injector has shorted out internally or a harness problem between the PCM module or can be a dirty clogged up injector

 

[yloops]

P2279-0172 Air intake issue
P0271 Injector 4 circuit high ? swop over the coil pack for that cylinder see if there is any difference? it may also possibly be a wiring issue other problems occur when the injector has shorted out internally or a harness problem between the PCM module or can be a dirty clogged up injector

Ooph if its a wiring issue, what do I do?
How do I approach this if its a harness problem. At a loss if I'm honest and don't want to go to a dealership.

 

[yloops]

Pretty depressed about this one. I've bought new Injectors, and will get a garage to install them. Praying that solves the issue. If its a wire or Harness issue then I think I'm in trouble.

 

[Pedro]

All you needed was a cheap inline coil/plug tester to check for electrical continuity from the harness you can get them on eBay or amazon just because the code is reading a wiring issue does not primarily point to that fault it may be a gummed up injector but you had multiple misfires through all 4 cylinders & the car could be running rich as you have vacuum problems with air intake leaks hence your plugs are sooty mixture too rich not enough air
The fan is being triggered maybe because you still have an Oil pressure sensor warning?

 

[yloops]

Hey just to update all, I replaced the breather pipe, and replace the oil switch sensor. I then had to replace the the Gasket cover that I had just replaced because it was whistling and boom. All the faults clear.

So in summary:

Refurbed the High Pressure Fuel Pump
Changed Coils
Changed Spark Plug
Changed Gasket on Gasket cover ( returned the new one and used the old one with a new gasket for 25)
Changed oil switch

Thanks to everyone that helped out! Really appreciate it. Would have cost me a million pounds to send to puegeot!