Greets again all. After replacing the PEM, ignition coils, fuel pressure sensor and spark plugs a couple months ago, the issues I was having with my 2008 C70 seemed to be resolved. It was running much better and getting better mpg, smoother, etc...
The other day I was out and while sitting at a light, the car flashed a low battery notification, then grumbled a moment and shut off. The engine was turning over, but it would not not start. Took the battery in, and there were no issues with the battery at all, but I checked codes and it gave me a P0347 - Camshaft Position Sensor A Circuit Low Input (Bank 2)

For the life of me, I cannot find information for the 2008 model of the C70. Everything is either 2001-2007 or 2012+ and/or the v70, XC70, S60, etc... I have watched a few videos from those, but nothing at all matches up with the configuration of my engine.
Any guidance would be greatly appreciated.

Thanks!

 

Cam position sensors are mounted to the left end of the cams, opposite end from the timing belt. Rarely is there a problem with the sensor - the problem is usually cam timing. Don't replace the sensor first - make sure you cams are timed correctly and the VVT hubs and system is working properly.

Your low battery notification meant at that moment the alternator was not charging. The warning light/notification comes on when the battery has a higher voltage than whats coming from the alternator. It can come on as the engine is stalling/stopping once the rpms get low enough. (maybe 400-0 rpms.)

Not sure why is stalled - perhaps the timing belt jumped at that moment! - Check it carefully before you drive the car anymore.

 

Thanks for the response! I went out to take another look and actually just found them - driver's side of the engine with the crank sensors on the left (or is it opposite?) Nevermind, those are the VVT solenoids....

I ended up having to tow the car, since it would not start again. Engine would crank and turn over, but not start. I put the battery on a trickle charge overnight, just in case, but it is still doing the same thing. Cranks, but won't actually start. Going to run out and grab the parts here in a bit and then test. I was looking at the alternator being a possible issue as well, so I will be running some tests there next.

 

If your car stalled while driving, spun over and would not restart then and now spins over but still won't catch with a charged battery - And you have a cam position code -

I would look very closely at the timing belt and hope it's not far enough out of time to have bent the valves. How many miles on the car? When was the timing belt replaced last?

What does it sound like when you are trying to start it? Does the starter seem to be spinning the engine over faster than normal? Has a higher pitched sound than normal?

 

It stalled while idling at a light.
189k or so miles. I have owned it for about 8k miles over the last 2 years (I do not drive it much - maybe twice/thrice a week for 20-30 miles total per week, and an occasional 100 mile trip) It was intended for my kid when he gets his license, since I ride my bike more, but I wanted to drive it enough to keep it in good working order.
Sounds perfectly normal when trying to start - no odd noises, nothing higher pitched or faster. Just cranks until I let go of the key and it stops a few seconds later.

My local shops didn't have the parts, so I ordered 2 sensors to replace. I am going to check out the timing belt when I go out there to swap the sensors tomorrow or Tuesday, once the parts are here.

 

A code does not mean a part is bad. It means the signal received is not what the module expects. The timing belt is at the other end of the cams - first try to pry the top of the cover back to view what it looks like under the timing belt cover. To line up the marks on the cams and the crank requires removal of the front engine mount to get to it. So not a quick and easy check on your engine. Maybe a compression check would be easier - that will give you good basic information.

Text courtesy of yourmechanic.com

"Common mistakes when diagnosing the P0347 code

A common mistake when it comes to diagnosing the P0347 code is immediately blaming the sensor and replacing it. Instead, the mechanic needs to examine the entire system since the code is related to the whole of the camshaft position sensor circuit. By conducting a proper diagnosis, it ensures that they find the actual cause for the code."

 

Yeah I doubt your cam sensor is bad. I'd bet on the timing belt too.