Volvo XC70 This wagon/SUV crossover offers the capabilities of an SUV without SUV size.

Xc70 reduced engine performance

  #1  
Old 10-07-2010, 02:06 PM
Junior Member
Thread Starter
Join Date: Jun 2010
Posts: 8
Exclamation Xc70 reduced engine performance

It seems a lot of XC70 drivers have seen this message crop up, and there are all kinds of suggestions as to what might be the cause. I occasionally (about once in three times) have trouble starting the engine, which then idles roughly for a few seconds and displays the REDUCED ENGINE PERFORMANCE message with the yellow warning triangle. It drives perfectly well until the light and message disappear. Recently, it's also happened on the motorway, briefly displaying for about 5 seconds, usually when going up a slight incline.

I've seen the following possible causes:

  • Failing battery (although it cranks OK)
  • Dirty or worn throttle body
  • Failing ETM

...and the following solutions:

  • Replace the battery (although I'm thinking that disconnection will reset the control software anyway)
  • Clean or replace the throttle body
  • Replace the ETM
  • Upgrade the control software (although I understand that this increases the ETM's tolerance to faults rather than actually fixing the fault)

Does anyone know the right answer?
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
volvoplett
Volvo XC70
43
05-15-2013 09:34 AM
BKYoder
Volvo XC90
0
01-27-2010 08:20 AM
mces80
Volvo S80
0
06-19-2009 10:14 AM
BILL_MCCASSEY
Volvo S60 & V60
4
03-08-2009 10:55 PM


Thread Tools
Search this Thread
Quick Reply: Xc70 reduced engine performance


Advertising
Featured Sponsors
Vendor Directory

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.