The other string was getting long and off of subject, so I started a new post. If the mods want it on the same string, please move it. Sorry. https://volvoforums.com/m_79382/mpag..._/tm.htm#79382

Anyway, 2000 S40 1.9 Turbo, 93,000 miles. The CEL is coming on almost everyday now, but ONLY when the car is cold and I do not let it idle fora minute at startup. The CEL says P0014 & P0015, camshaft sensor. I have flushed engine, changed oil 3 times, switched to full synthetic for all oil changes. I know the owner before me did not take care of it. I have removed the sensor itself and cleaned it and re-installed. Previously, tech advised me to replace it, but I have read some other threads it may not be the issue. Something about maybe vacuum hoses etc. Other than that the car runs great. 25/35 mpg. I just have to clear the code almost everyday.

Can I try some cheaper fixes before the big money, $150 is big to me. Or should I just bite the bullet. I would hate to spend it and then find out it is a $5 hose. But tech, buddy, if you say change it, I will. Thanks for your time everyone.

 

Im not sure what vaccum lines you would have read about.
The main things that throw the code are bad cam sensor or timing off or bad VVT pulley.

 

tech,
When I was looking for the cheapest price for a camshaft sensor, one of the websites had a fine print notice that the CEL code might also be coming from low oil pressure and may need an o-ring kit for the pan. have you ever heard of this being the culprit? I thought maybe they are trying to sell additional parts, but for the last week, when I start it, I give it just a LITTLE throttle one time and the light hasn't come on again. Since it only comes on within the first 30 seconds or so, could this be it? I await your thoughts.

 

That is somewhat true.
The VVT on the car is controlled by the oil pressure. If the Cam isn't in the proper position due to low oil pressure the light would come on.

 

I findit very interesting that the cam would be out of position due to oil pressure. I shouldn't be surprised I guess after I was informed my last Volvo, the 2002 V70, has more than 7 systems feeding info to the cruise control. Amazing. I truly do not know how you guys diagnose cars anymore. I'll take my 65 Mustang with about 16 wires in the whole engine bay, and this includes the 8 spark plugs and 1 coil wire. Geez. Anyway, I have a leak at the infamous turbo return line, parts are on order, and another leak somewhere else I believe, because there is oil on the undercarriage and I believe it is too much to be just the return line. Also, the knocking you had me fix is back again. Last time it was the swaybar endlink, now I don't know. The other end seems fine. It happens when I have my foot on the accelerator, not alot though, and turn the steering back and forth. I can repeat this all day long. Anyway, thanks for all you do and I'll keep you updated. I still love it, but my little S40 is trying my patience.