What's camshaft control??!! P1530 - Page 3

GialloSpider · #41 11-23-2011, 09:00 AM

I'm having a similar problem with a check engine light related to variable valve timing. But I get p0025. After clearing the code I can drive an hour or so and the light comes back.

I see from the parts diagrams the variators and what looks like a solenoid valve. Is there also a cam position sensor somewhere?

Any suggestions on trouble shooting is greatly appreciated.

Dr.Moe · #42 11-23-2011, 12:20 PM

Quote:

Originally Posted by GialloSpider

I'm having a similar problem with a check engine light related to variable valve timing. But I get p0025. After clearing the code I can drive an hour or so and the light comes back.

I see from the parts diagrams the variators and what looks like a solenoid valve. Is there also a cam position sensor somewhere?

Any suggestions on trouble shooting is greatly appreciated.

yes and it is located just before the first coil on both sides of the engine. I have to say the error code is not listed in the OBDII from Ferrari database. You can check the functionality of the cam position sensor by simply unplugging the wire and see if the same error code comes up on starting the car. You can also check the resistance across the sensor and compare with other side. As for the valve variator you can unplug it and check the resistance. The hard thing is to get the valve out and check the functionality of it. Wish you good luck.

Dr.Moe · #43 11-24-2011, 05:52 PM

Hi again all. So let's discuss the topic from mechanical point of view. To understand the error we have to know what does "active position reached min"?
I believe, correct me if I'm wrong, this means that the rotation of the cam was not sufficient to reach the degree desired. So, what can cause this? Which mechanical part could cause such defect?

**FerrariDublin** · #44 11-24-2011, 06:30 PM

Quote:

Originally Posted by Dr.Moe

Hi again all. So let's discuss the topic from mechanical point of view. To understand the error we have to know what does "active position reached min"?
I believe, correct me if I'm wrong, this means that the rotation of the cam was not sufficient to reach the degree desired. So, what can cause this? Which mechanical part could cause such defect?

Ahh, yes therein the question! What indeed does this cryptic clue mean?

Active Position Reached Min

Poor use of language alright and difficult to interpret.

If mechanical problem one would be thinking solenoid valve failing to open and allow oil to pass or else hydraulic variator failing to allow the oil pressure to retard the cam as it is supposed to do.

You never confirmed what happened when you moved the ECUs from side to side. Did the error code reappear and if so did it come on Bank 2 again or shift to Bank 1?

Dr.Moe · #45 11-25-2011, 06:00 AM

Hi Greg. The ECU shifting did not result on travelling of the error on the other side. The error persisted on same side i.e. Bank2.

**FerrariDublin** · #46 11-25-2011, 09:51 AM

Quote:

Originally Posted by Dr.Moe

Hi Greg. The ECU shifting did not result on travelling of the error on the other side. The error persisted on same side i.e. Bank2.

Ok then......

You've moved the variator valve from side to side with no effect.
You've moved the ECUs from side to side with no effect.

IF the problem code means that the variator isn't working properly it seems to follow at this stage that it must be either a failed (mechanical failure) variator OR that the electrical signals to the valve on Bank 2 are not reliable.

Given the pretty close proximity of the two valves would it be possible to plug the valve from bank 1 into bank 2 etc? If so, and the problem still stays on bank 2 then one would have eliminated the electrical signal as one would expect the problem to travel to bank 1 if that's where the problem lies.

I used the big IF above because I don't know what that P1530 "camshaft Control" code actually means! It may be that it signifies another type of problem but naturally it does seem likely that it is related to variator actuation and operation.

Just on a side note - are you happy you have good comms with your OBD2 reader with both ECUs? I know that with my reader (OBD BT Link + ScanTool) it always defaults to one of the two and in order to connect to the second one I have to first connect to the default one, then disconnect, then seek reconnect and only then does it give me an option to choose between the two. I think they come up ECU11 and ECU14. I'm not sure offhand which one it defaults to.

rustybits · #47 11-25-2011, 11:16 AM

Well the description is P1530, camshaft control (bank2)-active position not reached (minimum).
Have you carried out a resistance check of the valve? The figure you should be looking for is between 7 & 20 ohms.