Technical P2563 - Turbocharger Boost Control Position Sensor

[beForm]

Hi,

I'm having a bit of a Cain Dingle moment with my 64 plate (2014/15) Doblo 1.3 multijet.

All has been fine until fairly recently when I noticed that when I started the van it wouldn't rev past 3000rpm when stationary. However, once in gear and on the move it would accelerate rapidly and pull well.

That is until the other day when I was travelling down the A1, I stopped at the services but when I returned and started the van the EML appeared. I noticed that when I rejoined the A1 the van wouldn't accelerate very fast and would creep up to 3000rpm even with my foot to the floor, eventually it barely went above 3100rpm.

I initially suspected that it could be the air filter or MAF sensor (I had a similar experience with a Rover 25 Perkins diesel when the MAF was broken).

I uncoupled the sensor and gave the connections a blast of electrical cleaner. It didn't change anything. I then tried driving with the MAF uncoupled and that didn't make a difference.

I checked the air filter, and to be fair it needs replacing, but that didn't seem to be causing an issue.

So I dug out my cheap code reader and it came up with 'P2563 - Turbocharger Boost Control Position Sensor A Circuit Range / Performance'.

Seems like a done deal. However, I found this forum and read a few posts and it seemed like it could be a sticky wastegate actuator. I took the under body panels off, got a torch out and looked around but couldn't find it (I was following the 'sticky actuator' youtube video that was in another post).

Then I realised that it's very accessible and at the top of the turbo located just behind the radiator (picture attached). I sprayed with WD-40 but it wasn't seized at all.

That said, it does make a bit of a wheezing sound when I move the rod up and down, and when the engine is running the resistance is exactly the same as when the engine is off. Whether or not that is relevant, I do not know. Perhaps someone could shed some light?

Should it sound like I'm pumping up an airbed or rubber dinghy with one of those foot pumps you buy at the beach?

To confuse matters (for me at least) I have been searching online for a turbocharger boost control position sensor, but cannot find one. All of the search results are for pressure sensors, and it is my understanding that these two are not the same.

Therefore, does anyone know where I can buy the correct sensor from, and where it is located so I can change it?


Cheers

 

[bugsymike]

Hi,

I'm having a bit of a Cain Dingle moment with my 64 plate (2014/15) Doblo 1.3 multijet.

All has been fine until fairly recently when I noticed that when I started the van it wouldn't rev past 3000rpm when stationary. However, once in gear and on the move it would accelerate rapidly and pull well.

That is until the other day when I was travelling down the A1, I stopped at the services but when I returned and started the van the EML appeared. I noticed that when I rejoined the A1 the van wouldn't accelerate very fast and would creep up to 3000rpm even with my foot to the floor, eventually it barely went above 3100rpm.

I initially suspected that it could be the air filter or MAF sensor (I had a similar experience with a Rover 25 Perkins diesel when the MAF was broken).

I uncoupled the sensor and gave the connections a blast of electrical cleaner. It didn't change anything. I then tried driving with the MAF uncoupled and that didn't make a difference.

I checked the air filter, and to be fair it needs replacing, but that didn't seem to be causing an issue.

So I dug out my cheap code reader and it came up with 'P2563 - Turbocharger Boost Control Position Sensor A Circuit Range / Performance'.

Seems like a done deal. However, I found this forum and read a few posts and it seemed like it could be a sticky wastegate actuator. I took the under body panels off, got a torch out and looked around but couldn't find it (I was following the 'sticky actuator' youtube video that was in another post).

Then I realised that it's very accessible and at the top of the turbo located just behind the radiator (picture attached). I sprayed with WD-40 but it wasn't seized at all.

That said, it does make a bit of a wheezing sound when I move the rod up and down, and when the engine is running the resistance is exactly the same as when the engine is off. Whether or not that is relevant, I do not know. Perhaps someone could shed some light?

Should it sound like I'm pumping up an airbed or rubber dinghy with one of those foot pumps you buy at the beach?

To confuse matters (for me at least) I have been searching online for a turbocharger boost control position sensor, but cannot find one. All of the search results are for pressure sensors, and it is my understanding that these two are not the same.

Therefore, does anyone know where I can buy the correct sensor from, and where it is located so I can change it?


Cheers

If it is making a strange noise when manually activating the waste gate, I would locate the vacuum pipe leading to it, pull it off at an easy point, push the activating rod/lever all the way , hold your finger over the tube and then release the rod/lever, it should stay in that position until you release the vacuum at the tube. If it doesn't it will indicate a leak , probably at the activator diaphragm. Also check for any cracked or split vacuum pipes.
This is all done with engine off.
With engine running, if you pull the vacuum pipe off leading to the turbo actuator you should feel firm vacuum if the activator solenoid is operating, so when you reconnect it with engine running you should see the actuator at the turbo move.
If your engine is the more powerful version with a VVT turbo the action may be different , but the principle is the same.
Regarding VVT turbos the vanes can "gum up" due to short journey slow speed trips etc. stopping correct operation.
If you are lucky that can be cleaned with Turbo Cleaner spray etc.
I have had various error codes indicating certain sensors, but I suggest you take them as a guide and not 100% the fault , more the direction to look.

 

[beForm]

If it is making a strange noise when manually activating the waste gate, I would locate the vacuum pipe leading to it, pull it off at an easy point, push the activating rod/lever all the way , hold your finger over the tube and then release the rod/lever, it should stay in that position until you release the vacuum at the tube. If it doesn't it will indicate a leak , probably at the activator diaphragm. Also check for any cracked or split vacuum pipes.
This is all done with engine off.
With engine running, if you pull the vacuum pipe off leading to the turbo actuator you should feel firm vacuum if the activator solenoid is operating, so when you reconnect it with engine running you should see the actuator at the turbo move.
If your engine is the more powerful version with a VVT turbo the action may be different , but the principle is the same.
Regarding VVT turbos the vanes can "gum up" due to short journey slow speed trips etc. stopping correct operation.
If you are lucky that can be cleaned with Turbo Cleaner spray etc.
I have had various error codes indicating certain sensors, but I suggest you take them as a guide and not 100% the fault , more the direction to look.

Hi,

Thanks for the reply and advice.

I've attached a video of the sound. I tried doing it again with the engine on but couldn't hear the wheezing over the engine noise.

Unfortunately, the weather is rats at the moment, but if it clears up I'll have a go with the vacuum pipe.

In regards to the turbo cleaner (the van was stood for a while); There seem to be two types. You stick one in the fuel tank like RedEx, and the other option is a spray/foam. I'm assuming the spray is a more direct, effective option?

Cheers

 

[bugsymike]

Hi,

Thanks for the reply and advice.

I've attached a video of the sound. I tried doing it again with the engine on but couldn't hear the wheezing over the engine noise.

Unfortunately, the weather is rats at the moment, but if it clears up I'll have a go with the vacuum pipe.

In regards to the turbo cleaner (the van was stood for a while); There seem to be two types. You stick one in the fuel tank like RedEx, and the other option is a spray/foam. I'm assuming the spray is a more direct, effective option?

Cheers

Hi,

Thanks for the reply and advice.

I've attached a video of the sound. I tried doing it again with the engine on but couldn't hear the wheezing over the engine noise.

Unfortunately, the weather is rats at the moment, but if it clears up I'll have a go with the vacuum pipe.

In regards to the turbo cleaner (the van was stood for a while); There seem to be two types. You stick one in the fuel tank like RedEx, and the other option is a spray/foam. I'm assuming the spray is a more direct, effective option?

Cheers

It's not a sound I would expect to hear.
Try what I suggested, all of it to get a better idea.
Re the turbo cleaners, if that was the problem which I doubt as the activation arm seems to move easily in video, normally the spray foam as advised in the instructions is best, then followed up by regular additive in fuel every other tankful I would do.
On my daughters Golf GTD 130 with VVT I took out the sensor from memory just on exhaust side of turbo and gave it a good blast of that , let it work , followed by lots of moving the arm all the way in both directions.
If you see a pic of the inside of a VVT turbo there are little "petal" type things that cover the holes on a sliding part, so if sticking they either stay partly open or parly closed which throws all the readings out and causes error messages.
I am guessing your turbo is the more basic type though.

 

[beForm]

It's not a sound I would expect to hear.
Try what I suggested, all of it to get a better idea.
Re the turbo cleaners, if that was the problem which I doubt as the activation arm seems to move easily in video, normally the spray foam as advised in the instructions is best, then followed up by regular additive in fuel every other tankful I would do.
On my daughters Golf GTD 130 with VVT I took out the sensor from memory just on exhaust side of turbo and gave it a good blast of that , let it work , followed by lots of moving the arm all the way in both directions.
If you see a pic of the inside of a VVT turbo there are little "petal" type things that cover the holes on a sliding part, so if sticking they either stay partly open or parly closed which throws all the readings out and causes error messages.
I am guessing your turbo is the more basic type though.

Hi,

I ended up leaving the van for a couple of days on the drive. I couldn't be bothered to look at it. However, for some reason today the sun was shining on the bonnet area so I just opened it up and had an inspection of the small hoses that connect to the turbo and loop around the the engine.

Lo and behold I found a broken/disconnected pipe. I've attached a picture - it blends in well with the rest of the engine so I didn't notice it at first glance, it was only by following and feeling the hoses/pipes that it became apparent.