TDV8 fault codes - turbo and air suspension

[BPMP_Vogue]

Hi all,

bit of s strange one, have a couple of issues. 2007 Sport 3.6TDV8

1. occasionally when driving up the freeway here in Adelaide or up Willunga hill basically under sustained load i get the "engine system fault" on dash car has reduced power. turn car off and on and it is back to normal. this happens more so if we haven't been for a decent drive in a while.
had the car at local land rover mechanic and he pulled the code P132B-21 - Turbo Charger Boost control A Below Minimum. they seem to think it will require the turbo being replaced as they claim that it is down on power anyway compared to what they should be, but are going to do some more diagnosis first nut aren't that hopeful of it being something else. the car doesn't seem to be down on power to me i thought it went very well, but it is my first TDV8. can given that this is very intermittent and only happens going up a hill is is likely to be a turbo? or could more likely be sensor/actuator etc? i am crossing fingers as they tell me 8-10K for turbo replacement as it is a body off job.

2. recently after lowering the car so the grandparents could get in and then raising back to normal height i got the yellow light on dash and "normal height only" message on dash. again, turning off car and on would clear this error. it gradually became more and more often until it came on every time when driving. codes pulled were C1A20-64 - Pressure increases too slow when filling reservoir. again land rover mechanic said he has never seen this error and it not be the compressor that is stuffed. they say they have checked sensors and air exhaust valves etc and reccommend changing the compressor and also the filter unit, at $2.5K.

however after clearing the codes. the air suspension fault has not come back on for 2 days now.

my questions are do these diagnoses seem normal? or could there be some other explanation. as a 10K + bill to rectify both issues has me

thanks

[Eevo]

first one sounds like a sticky actuator.

[zilch]

first one sounds like a sticky actuator.

same happened on my TDv6, dealer wanted to change the turbo, LRA suspected it was
the actuator, LRA were correct and after replacement all faults/code cleared,

[BPMP_Vogue]

first one sounds like a sticky actuator.

yes that's what i am hoping they find after some more time diagnosing. after reading on here and other forums i have seen that can be an issue. inter cooler hoses etc are all OK.

[BPMP_Vogue]

same happened on my TDv6, dealer wanted to change the turbo, LRA suspected it was
the actuator, LRA were correct and after replacement all faults/code cleared,

ok thanks for the info. do you know how hard/easy of a job it is to replace actuator?

i'm guessing you haven't had the fault reappear?

[rar110]

Try spraying the actuator with some penetrating lubricant and try to get it to move with a hook.

Another possibility is MAP sensors need a clean. You need some contact cleaner and to be careful not to touch the sensors.

I’m pretty sure you can buy a refurb kit for the compressor.

[Eevo]

Try spraying the actuator with some penetrating lubricant and try to get it to move with a hook.

Another possibility is MAP sensors need a clean. You need some contact cleaner and to be careful not to touch the sensors.

I’m pretty sure you can buy a refurb kit for the compressor.

this!

[BPMP_Vogue]

Try spraying the actuator with some penetrating lubricant and try to get it to move with a hook.

Another possibility is MAP sensors need a clean. You need some contact cleaner and to be careful not to touch the sensors.

I’m pretty sure you can buy a refurb kit for the compressor.

thanks will give it a try/suggest to mechanic.

and will look into the refurb kit

[zilch]

ok thanks for the info. do you know how hard/easy of a job it is to replace actuator?

i'm guessing you haven't had the fault reappear?

it was replaced by the dealer under extended warranty about 5 years ago and the issue has not reappeared

thanks

[Graeme]

The suspension fault could simply be that the dryer filter is blocked with pulverised desiccant. The dryer chamber can be removed without removing the compressor if you're familiar with the compressor assembly, otherwise remove the compressor first, which can be awkward accessing the top bolts unless you have appropriate socket extensions.

Avoid using other than standard height until the issue is resolved as the compressor will eventually be unable to raise the vehicle to normal height then the suspension will be dropped to the bump-stops.