Xc90 limp mode on acceleration

[naveedy]

Hi

I am interested in any help on my XC90 2010 150,000 miles

Getting engine system service and loss of power limp mode on acceleration

Got an isoft diagnostic got the codes

ECM -1540 and ECM 1507

Had reset but recurs after acceleration to around 35 miles per hour or more

No turbo noises or hissing noises to suggest a damaged hose

Any ideas appreciated if it’s a quick fix rather than spending lots to just diagnose

Had swirl flaps and egr valve cleared a few years ago

Thanks

[Tannaton]

That's a boost control issue, both too low and too high. It could be a leak or a turbo vane actuator issue. First step would be to check for leaks, they're usually the cheapest to fix.

If you have access to VIDA, I would have someone sit in the passenger seat with the laptop and log live data as you drive.

This may help :

https://volvoforums.com/forum/volvo-...mp-mode-88471/

PS - good man getting the codes read, much easier to help....

[naveedy]

Thanks much appreciated

[naveedy]

Hi guys took to a really good independent in Stockport - turned out to be a turbo actuator valve - the guys diagnosed and fitted a refurbished one all for £225 - driving smooth now !
No check engine light ! Such a small part creating such havoc !

[Harley Dave]

Originally Posted by Tannaton

That's a boost control issue, both too low and too high. It could be a leak or a turbo vane actuator issue. First step would be to check for leaks, they're usually the cheapest to fix.

If you have access to VIDA, I would have someone sit in the passenger seat with the laptop and log live data as you drive.

This may help :

https://volvoforums.com/forum/volvo-...mp-mode-88471/

PS - good man getting the codes read, much easier to help....

Good call Tannaton

Cheers

Dave

[Brydekirk]

My fault codes are 1540 and 1517.
Will that be the same problem?
Thanks in advance 👍

[Kev0607]

Originally Posted by Brydekirk

My fault codes are 1540 and 1517.
Will that be the same problem?
Thanks in advance 👍

Likely a similar issue.

Check for leaks from hoses first. A loss of vacuum pressure from a split hose for example can cause issues with power. Failing that, it could be the same issue that the other person had (turbo actuator valve).

[DazN]

Mine's currently doing the same... We think it's the actuator but struggling to find a genuine refurbished one.

Found a place in Leicester that will rebuild it, but waiting on getting VIDA set up so we can hopefully confirm if it's the actuator.