How to Diagnose a Bad ECM/ECU on a 2001 XC70

2001 Xc70

MVS Volvo Forums member jcb went to great lengths to isolate the ECU in his 2001 XC70. He did work to make sure it was the culprit. This forum topic is how he diagnosed a failing ECM/ECU on his P2 Volvo. After two days of troubleshooting, I’m ready to send my ECM out for repair (2001 […]

XeMODeX is a MVS Sponsor!

We’re proud to announce XeMODeX is partnering with this site to bring all of us information and Volvo troubleshooting solutions. XeMODeX cut its teeth developing and marketing a fix for Volvo’s ETM fiasco with their in-house developed contact-less potentiometer ETM. This announcement means XeMODeX’s ad appears at the top of MVS pages. Please let them […]

Troubleshoot Heat Soak ECM, BCM, CEM, & TCM

Need to Troubleshoot Heat Soak ? Detailed thread from hankb on troubleshooting ECM DIM CAN bus as function of heat and humidity: This is my second post on this forum regarding the same unsolved problem – you can find my first saga here on this site. That post was a year ago – it describes […]

Who Repairs 2004-era S80 ABS Modules?

I have read the great 21 pages on this repair in another forum on this site. I am inspired to attempt the same repair on my 2004. Most of the posts, however, seem to pertain to slightly older model cars than mine.

Will an abs module repair work on a 2004 S80?

Tips and Hints for XeMODeX ETM Installation

Replacing your ETM? Some Tips from an ETM Manufacturer It’s has been over a year since we have introduced the Non – Contacting ETM upgrade. The purpose of this post is to make all of you Do It Yourselfers aware of the potential issues and problems that others like you have come across during their […]

Codes P1021,1026,1032,1081 & 0420

Well, I disconnected the battery for 30 minutes to reset all codes. Three days later I experienced the same problem (illuminated ETS & engine light as well as decrease acceleration and stalling). I had the codes read immediately by Auto Zone and was given codes P1021, P1026, & P01032. 1999 s70 trouble codes P1021,1026,1032,1081 & […]

Should I Stay and Pay or Cut Losses?

The Big ETM Decision should i stay and pay or cut losses? Volvo ETM path, XeMODeX, or cut and run? If this replacement will pretty much do it and be the last chapter, I suppose I’m prepared to shell out the money. If this will continue being a stream of mechanic income leaving me with […]

Forum Users Share Experiences with the XeMODeX ETM


MVS forum users share their experiences with the XeMODeX ETM Are you having issues with your ETM (Electronic Throttle Module) and thinking about replacing it or refurbishing it with XeMODeX? Take a look at our ongoing list of XeMODeX users and their opinions on the XeMODeX replacement ETM. XeMODex produces replacement electronic modules for a variety […]

Electronic Throttle Module (ETM) Page

The MatthewsVolvoSite Electronic Throttle Module (ETM) Page is the best place to start when researching ETM issues. It covers the cause of the ETM problem, Volvo’s response, and what you can do to avoid getting ripped off on an ETM repair at the dealer.

Volvo’s Electronic Throttle Module (ETM)

Volvo ETM - artist's rendition from Volvo technical literature

Volvos affected by the electronic throttle module are 1999-2002 models (US model years). Before 1999, Volvo used a good old mechanical set of parts to control the throttle. In 1999, they switched to a “fly-by-wire” module. Volvo’s 1999-2002 ETM fails because there is physical contact between two small parts that results in wear, then damage, […]

Finally a Non-Contacting ETM Solution?

The ETM fiasco may have a 3rd party solution! This is potentially big news. “XeMODeX Inc. is proud to introduce the World’s first non-contacting Volvo ETM Throttle Module. This unit features a brand new revolutionary Digital Angle Sensor (DAS) that replaces mechanical potentiometers. The leading cause of premature ETM failure.” IPD is also considering a […]