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Low voltage from ECM to VVT.

Help, Advice, Owners' Discussion and DIY Tutorials devoted to the second generation C70, S40 and V50 Volvos -- awkwardly model year 2004 ½ onwards -- plus where to go for advice and discussion on Volvo's sporty C30 Coupe powered by Volvo's ubiquitous inline 5-cylinder power plant.
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Joined: Sun Nov 10, 2019 6:20 pm
Year and Model: 2005 s40 2.4i
Location: Albany, NY
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Low voltage from ECM to VVT.

Post by Jcb500 » Sun Nov 10, 2019 7:10 pm

Very new to this site. What I got, 2005 s40 2.4i 5 speed, Moon roof. 170,000 miles. Original engine was over heated and burned out 3rd cylinder, car sat for 4 yrs. I got car and had a 60k mile engine put in. Car runs superb, but check engine light comes from a P0075 code. (poor signal from vvt)(intake variable valve timing solenoid). Volvo trained mechanic checked it out and says not enough electrical power coming from ECM to vvt. I sent ecm out to be fixed and was told there was a software issue, and ecm should now be proper.
The ecm is still throwing a P0075 code.

All suggestions are welcomed.

Joe in Albany, NY

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