XC70 throw ECM-671C after replacing camshaft position sensor

[amolero]

My 2005 XC70 gave originally a P0342 code. I replaced the faulty camshaft position sensor and soon after it gives a 617C code (camshaft position, exhaust high​), and also replaced the connector that have some small wire exposure. The car start at once, idle smoothly and run very well, no hesitation at all. If I erase the code and run the car, the check engine light will not come out while running. However, If I turn off the car and turned back on, the code immediately returns. I am not sure whether these cars require some sort of camshaft position sensor relearn. I have run the car around 100 miles with the hope of seeing some sort of self adjustment, but this has not happened. Any suggestion would be greatly appreciated.

[Vova585]

1. Where is this new sensor came from? If labeled "new" from ebay or Amazon even if Iin the box saying "volvo" i would question it's accuracy. If the old sensor is available try to compare dimensions. Even brand new oem from dealer might be bad from the box.
2. I would inspect the camshaft sensor instalation. Any chance previous sensor particles are left there and clearance between sensor and camshaft is altered?
3. If all checks ok, I would probably try to go to local salvage yard and remove 1-2 oem sensors for a "good luck" and try them on.
4. If that fails I would recheck timing marks. Check pindrag on the connector with small needles, check 5v reference(if I remember correctly it is 3 wire design). If that checks good i might try to look down the harness if anything shorting to engine ground especially at bends.
If that checks I would honestly say "it is time to drink beer" and bring it to dealer.
Of course there is opportunity to buy U-scope, PIco, spend hours on Dice looking at cam-crank signals, but for me it would be not worth the headache

[amolero]

I forgot to mentioning that I have previously a problem with the exhaust VVT solenoid. I replaced with a Febi Bilstein from FCP, but the problem persisted. Then I replaced with an original Volvo, and this problem was solved but immediately I got the code for a camshaft position sensor low signal on same bank1. This is why I proceed to replace it.

[amolero]

1. Where is this new sensor came from? If labeled "new" from ebay or Amazon even if Iin the box saying "volvo" i would question it's accuracy. If the old sensor is available try to compare dimensions. Even brand new oem from dealer might be bad from the box.
2. I would inspect the camshaft sensor instalation. Any chance previous sensor particles are left there and clearance between sensor and camshaft is altered?
3. If all checks ok, I would probably try to go to local salvage yard and remove 1-2 oem sensors for a "good luck" and try them on.
4. If that fails I would recheck timing marks. Check pindrag on the connector with small needles, check 5v reference(if I remember correctly it is 3 wire design). If that checks good i might try to look down the harness if anything shorting to engine ground especially at bends.
If that checks I would honestly say "it is time to drink beer" and bring it to dealer.
Of course there is opportunity to buy U-scope, PIco, spend hours on Dice looking at cam-crank signals, but for me it would be not worth the headache

1. Where is this new sensor came from?
I got the sensor from FCP. It is the Pro Parts Sweden

2. I would inspect the camshaft sensor instalation. Any chance previous sensor particles are left there and clearance between sensor and camshaft is altered?
I also replaced the sensor housing with an original Volvo part. The camshaft was clean

3. If all checks ok, I would probably try to go to local salvage yard and remove 1-2 oem sensors for a "good luck" and try them on.
I will swap the intake-exhaust sensors to see if this make a change.

4. If that fails I would recheck timing marks. Check pindrag on the connector with small needles, check 5v reference(if I remember correctly it is 3 wire design). If that checks good i might try to look down the harness if anything shorting to engine ground especially at bends.

I replaced both connectors and the proximal section of the cables. Your are right, these contain three cables (red, black and blueish). I notice a little exposition of the wire close to the connector, so I decided to replace them.

5. If that checks I would honestly say "it is time to drink beer" and bring it to dealer.

The beer is a good idea. I think the only other thing is that the timing is off. I replaced the timing belt, VVT selenoid, water pump and tensioners 6 months ago as my mechanics (which is not the dealer) told me that this repair would likely match the price of this old car. Now I feel I will have to come back

[Vova585]

Average new car is 55k or so. Yes, we all spend more on our old volvos than they are worth on marketplace. PPS would be my primary suspect at this point and I would much rather replace it with used oem. If you had no codes after replacing the timming belt and related items doubt the issue is there, but since you did all the work yourself and the code was there after the work, I would retest it all.
I like this instruction-visual. Let's hope it is PPS made in China "chineesium" problem and nothing more sophisticated

[amolero]

Average new car is 55k or so. Yes, we all spend more on our old volvos than they are worth on marketplace. PPS would be my primary suspect at this point and I would much rather replace it with used oem. If you had no codes after replacing the timming belt and related items doubt the issue is there, but since you did all the work yourself and the code was there after the work, I would retest it all. I like this instruction-visual. Let's hope it is PPS made in China "chineesium" problem and nothing more sophisticated

Thank you, Vova585.

What is the PPS?

Keep in mind, my XC70 is a 2005 model.

[Vova585]

PPS-ProPartsSweden.
IMHO all 5cyl are almost the same with minor differences. Main difference might be 1vvt hub vs 2vvt system.

[Vova585]

Around me there are plenty of xc70 to "canabalize". What part of NY are you from?

[amolero]

Around me there are plenty of xc70 to "canabalize". What part of NY are you from?

Westchester, east end, close to Connecticut

[Vova585]

Pardon me, couldn't resist..
Your location makes this way easier. Just bring it to the "school for gifted" and someone from X-man will fix it.