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Borbarad

Member Since: 05 Aug 2020
Location: Hamburg
Posts: 44

2013 Defender 110 Puma 2.2 SW Fuji White

2.2 TDCI Fuel Pressure Regulator 1 Exceeded Control Limits

Error Code P228C - Fuel Pressure Regulator 1 Exceeded Control Limits - Pressure Too Low

Land Rover Defender 110 Year 2013, 2.2 TD4 Engine.

We really are lost on this error. We tried a lot, like:

- Replace Volume control valve
- Replace fuel rail pressure sensor
- Replace Diesel Filter
- Replace Fuel Tank
- Check the wiring
- Check the Fuel lines

The motor just runs in itself perfectly fine. No nothing, like normal as before. IU cann even rev up in the secon gear like 4000rpm… no issue.

But as soon as i drive accerlate. Above 3-6 gear and 2000rpm the Engine Control Light goes on an engine goes into safe mode….

The Error code also says “Check for fuel injector stuck open”, but this would cause the engine not really running proper, to high fuel consumption, diesel smell, o even idle etc. etc. and realy non of these signs as occurring. And all the expects so far said, nope, thats not a stuck injector.

Does anyone have an idea? We are close to replacing the high pressure fuel pump - but tagein this normally doesn’t die as if then it is the Volume control valve, which we replaced..

Or can this be something complete different cause a malfunction here? Turbo? Anything else we might not have looked at?

Can go something wrong with the fuel cooler?

Thanks,

Last edited by Borbarad on 29th Oct 2023 2:56pm. Edited 1 time in total

29th Oct 2023 8:13am

andy63

Member Since: 30 Jun 2023
Location: north east
Posts: 531

Have you checked the fuel rail pressure at idle and when giving it a bit throttle to see what it is doing, and are the values about right.. Or confirm the code..
When you say you have changed the regulator on the rail? I didn't know the 2.2 l had a rail regulator.. Just a vcv..
And as you say I'd be checking the air flow sensor.. Map sensor.. And turbo

29th Oct 2023 8:39am

LandRoverAnorak

Member Since: 17 Jul 2011
Location: Surrey
Posts: 11324

This appears to be a particularly tricky one to solve. However, take a look at the last three or four posts in this thread, which suggests after trying everything else it is in fact the HP fuel pump:

https://www.defender2.net/forum/topic74189...p;start=30

If you search the site for the fault code, there are a handful of threads but none of the others reach a useful conclusion.

Hope that helps. Darren

110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak

"You came in that thing? You're braver than I thought!" - Princess Leia

29th Oct 2023 8:43am

Borbarad

Member Since: 05 Aug 2020
Location: Hamburg
Posts: 44

andy63 wrote:
Have you checked the fuel rail pressure at idle and when giving it a bit throttle to see what it is doing, and are the values about right.. Or confirm the code..
When you say you have changed the regulator on the rail? I didn't know the 2.2 l had a rail regulator.. Just a vcv..
And as you say I'd be checking the air flow sensor.. Map sensor.. And turbo

It does, In the Land Rover Manual it part of the fuel rail, but if you look at the ford it can be easily exchanged.

If you are in idle everything is fine, for example can rev up to 4h-4K no issue. Second gear even easily go into the 3k and nothing, but as soon I’m in 3-6 and rev past the 2k, engine control light.

Air Flow Sensor is ok, map sensor is ok…

29th Oct 2023 8:56am

Borbarad

Member Since: 05 Aug 2020
Location: Hamburg
Posts: 44

LandRoverAnorak wrote:
This appears to be a particularly tricky one to solve. However, take a look at the last three or four posts in this thread, which suggests after trying everything else it is in fact the HP fuel pump:

https://www.defender2.net/forum/topic74189...p;start=30

If you search the site for the fault code, there are a handful of threads but none of the others reach a useful conclusion.

Hope that helps.

Yeah, that really the last thing we can thing of..… we changed the valve on the pump but that one didn’t help… It is really a big job to replace the High Pressure Pump……

B

29th Oct 2023 9:12am

andy63

Member Since: 30 Jun 2023
Location: north east
Posts: 531

Borbarad wrote:
andy63 wrote:
Have you checked the fuel rail pressure at idle and when giving it a bit throttle to see what it is doing, and are the values about right.. Or confirm the code..
When you say you have changed the regulator on the rail? I didn't know the 2.2 l had a rail regulator.. Just a vcv..
And as you say I'd be checking the air flow sensor.. Map sensor.. And turbo

It does, In the Land Rover Manual it part of the fuel rail, but if you look at the ford it can be easily exchanged.

If you are in idle everything is fine, for example can rev up to 4h-4K no issue. Second gear even easily go into the 3k and nothing, but as soon I’m in 3-6 and rev past the 2k, engine control light.

Air Flow Sensor is ok, map sensor is ok…

I get that, but if the scan tool is left in on live data, you can monitor the rail pressure as it drives.. I think there will even be freeze frame data stored at the time the fault is generated...
im off to check the fuel system ..I was pretty sure I don't have a relief valve on the fuel rail itself

29th Oct 2023 9:57am

andy63

Member Since: 30 Jun 2023
Location: north east
Posts: 531

possibly at crossed purposes here..
ive checked my book and the rail has a pressure sensor, not a valve.. the pressure to the rail is governed by the vcv..
none of which helps you but I was confused by your wording I think..
hope you get it sorted

29th Oct 2023 10:06am

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 17443

2007 Defender 110 Puma 2.4 DCPU Stornoway Grey

I'm not particularly familiar with the 2.2, but I imagine that essentially it is similar to the 2.4.

The 2.4 has a pressure sensor and (not-resettable) relief valve on the rail (front and rear ends respectively) and the pressure is regulated by the VCV in the pump. The VCV in effect modulates the flow from the LP stage of the pump to the HP stage. There is no regulator attached to the fuel rail.

I imagine that the pump is different on the 2.2 since you have an LP pump in the tank, but I doubt that the operating principle or the HP system is different.

29th Oct 2023 11:32am

Borbarad

Member Since: 05 Aug 2020
Location: Hamburg
Posts: 44

andy63 wrote:
possibly at crossed purposes here..
ive checked my book and the rail has a pressure sensor, not a valve.. the pressure to the rail is governed by the vcv..
none of which helps you but I was confused by your wording I think..
hope you get it sorted

Sorry yes is a sensor not a valve, but i exchanged both… an nothing helped.

B

29th Oct 2023 2:56pm

Borbarad

Member Since: 05 Aug 2020
Location: Hamburg
Posts: 44

So, I just pushed him today.

First, drove normal without a lot of acceleration to the station, fuel. Nothing

Next, provoked the error: ..2,3,4 accelerated to over 2000rpm... 5th at about 2200rpm no error. Off to the 6th, error and limp mode. Error deleted, then in 5th and accelerated again... Error, deleted... and just continued to accelerate 2000rpm, 2200, 2500..held and waited to see if the error came... nope... switched to 6th, error, deleted, continued to accelerate….. then just in the 4th… accelerated to 2000rpm..Error, deleted it and just kept on the gas until I had 2700rpm and held it… nothing….

In short: This just doesn't make any sense. It can't be a real defect, i.e. the high-pressure pump or something like that, because then the error would just keep popping up again and again if I kept accelerating... but that usually didn't happen.

So what could this be? What can trigger this around 1900-2100rpm? Is there anything else that could influence it?

30th Oct 2023 10:54am

Borbarad

Member Since: 05 Aug 2020
Location: Hamburg
Posts: 44

Oh here are a few photos from the Nanocom… das this make sense???

B

30th Oct 2023 4:25pm

khamuul

Member Since: 14 Oct 2017
Location: Teutoburg Forest
Posts: 24

2007 Defender 110 Puma 2.4 SW Tonga Green

Re: 2.2 TDCI Fuel Pressure Regulator 1 Exceeded Control Limi

Borbarad wrote:

- Replace Volume control valve
- Replace fuel rail pressure sensor
- Replace Diesel Filter
- Replace Fuel Tank
- Check the wiring
- Check the Fuel lines

Did you replace the PRV (Pressure Relief Valve) together with the VCV?

30th Oct 2023 9:34pm

andy63

Member Since: 30 Jun 2023
Location: north east
Posts: 531

Borbarad wrote:
Oh here are a few photos from the Nanocom… das this make sense???

B

those readings don't make much sense to me..one is blurred the other suggests its calling for 2740 odd bar...the max pump pressure should be in the order of 1800bar, which your second photo is showing a pressure of 189mpa which would equate to1890bar..

I think your issue is load related...when you stress the engine ie load it and its calling for an increase in fuel its not getting the required pressure..the pressure generated should be pretty well independent of the revs the engine is doing
thats why when you drop into 6th and give it some throttle its generating a fault and would do so in a lower gear if the engine was given a good load ..
that points to your vcv or pump..
it was suggested above that similar faults had been sorted by replacing the pump, and if you can verify that your vcv is outputting the correct signal then there is only the pump left..
thats my ramblings anyway, and as I said , I hope you get it solved..

31st Oct 2023 7:56am

Borbarad

Member Since: 05 Aug 2020
Location: Hamburg
Posts: 44

Re: 2.2 TDCI Fuel Pressure Regulator 1 Exceeded Control Limi

khamuul wrote:
Borbarad wrote:

- Replace Volume control valve
- Replace fuel rail pressure sensor
- Replace Diesel Filter
- Replace Fuel Tank
- Check the wiring
- Check the Fuel lines

Did you replace the PRV (Pressure Relief Valve) together with the VCV?

Yes, both….

B

31st Oct 2023 12:01pm

khamuul

Member Since: 14 Oct 2017
Location: Teutoburg Forest
Posts: 24

Okay, one less possible cause of defect.

31st Oct 2023 12:10pm

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