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99 C70 T5m Xemodex ETM throwing codes p0121 and p1238

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1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
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kingcong412
Posts: 2
Joined: 18 April 2009
Year and Model: 1999 Volvo C70
Location: MD

99 C70 T5m Xemodex ETM throwing codes p0121 and p1238

Post by kingcong412 »

Frustrated here.

I've got a 99 Volvo C70 T5M I have upgraded to the Xemodex ETM and IPD HD TCV. I'm throwing codes P0121 and P1238 after a little hard driving and the problem effects drivability. The throttle is touchy and I can't seem to get descent boost.

My question is : WTF is going on!! :shock:

Can p1238 cause P0121?? I'm stumped. In research P0121 is typically the ETM, and P1238 is the TCV...but I thought that would have been solved with the Xemodex and IPD parts. I've replaced all hoses, vacuum lines, and turbo control lines w/ silicone ones. Replaced the MAF. Could the MAP sensor be a culprit? Do I have a wiring issue? Does the Xemodex ETM need to go back? I haven't read of anyone with the same two codes simultaneously. HELP!
Last edited by kingcong412 on 27 May 2009, 10:37, edited 1 time in total.
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vegasjetskier
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Year and Model: 2010 Toyota Prius
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Post by vegasjetskier »

kingcong412 wrote:Frustrated here.

I've got a 99 Volvo C70 T5M I have upgraded to the Xemodex ETM and IPD HD TCV. I'm throwing codes P0121 and P1238 after a little hard driving and the problem effects drivability. The throttle is touchy and I can't seem to get descent boost.

My question is : WTF is going on!! :huh:

Can p1238 cause P0121?? I'm stumped. In research P0121 is typically the ETM, and P1238 is the TCV...but I thought that would have been solved with the Xemodex and IPD parts. I've replaced all hoses, vacuum lines, and turbo control lines w/ silicone ones. Replaced the MAF. Could the MAP sensor be a culprit? Do I have a wiring issue? Does the Xemodex ETM need to go back? I haven't read of anyone with the same two codes simultaneously. HELP!
It might be your IPD TCV. I know they've had several problems with them.
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SOLD - 2001 Volvo S80 T6: Mobil 1 Oil & Synthetic ATF, Brake Performance drilled and slotted front rotors, Akebono Euro Ceramic pads and Yokohama Avid V4S tires, 91K miles.

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MadeInJapan
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Joined: 31 March 2005
Year and Model: '98 S70 T5 '07S40T5
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Post by MadeInJapan »

I agree- doesn't sound like the fault of your new ETM rebuild.
Call Lucky or Scott and talk to them- some were faulty- others can be adjusted (TCV). I have them on 2 of my cars and love them!
'98 S70 T5 Emrld Grn Met/Beige Tons of Upgrades Mobil-1
'04 V70 2.5T Red/Taupe Some Upgrades Mobil-1
'07 S40 T5 AWD 6 speed manual! Silver/Black Stage1 Heico & Elevate
'07 S60 2.5T Blue/Taupe- my kid's Volvo
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capecodbuilder
Posts: 25
Joined: 24 August 2009
Year and Model: 1997 850 glt, 2000 v
Location: United States

Post by capecodbuilder »

Old thread but I'm having the same two codes and symptoms even after ruling out etm. If the original poster reads this could you plz tell us what you came up with? going to try a tcv today. Thanks for any help.
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