Intermittent VANOS Code 72 - Inlet late valve

[Pklauser]

Whelp, 72 and 184 have reappeared at VIR this weekend. Frustrating.

72 - "Intake VANOS, late valve" again comes with: "Line break, no value. Missing." Though this time it also came with: "Error currently exists". So maybe it's more firmly dead?
184 - "Intake VANOS, regulation" comes with: "Actual value too large".

I don't know where to go next. The VANOS oil pressure was clearly incorrect, but apparently not the root cause.
Looking at the camshaft angles in INPA, they move around and read just fine. I have no idea what they should be to know if they look right.

I can check the physical timing again, and actually pull the VANOS unit off this time to verify I get the cam retarded all the way, but I really think I had it right last time. I will also check the wiring from the intake cam sensor to the ECU, since that isn't something I checked. If anyone has any good ideas here, please share.

Definitely seems odd that it's only present on the intake side.

[sapote]

The errors happened at higher rpm. The bottom of the sreenshot shows hex B8, and other error codes that I have not tried to understand why it listed the long list....

Error at higher rpm could be related to electrical signal on the IN cam sensor. Pull out connector at the DME and have a look, and check the resistance from DME pins to the IN sensor connector pins.

[Pklauser]

Pull out connector at the DME and have a look, and check the resistance from DME pins to the IN sensor connector pins.

Will do.

Did some more testing today while I was at the track. 72 & 184 seem to consistently come back when I'm pushing it, then they started popping up on the street on the drive home as well, including at lower RPM. I cleaned out the solenoid connector in case that was somehow causing an issue. I'm starting to wonder if the solenoid has given up so soon. Going to talk to Lama at Beisan and see what they think/see if I can get another solenoid to test with or something.

nextelbuddy I see you had a thread here recently, did you ever get your 72/184 issue sorted out?

[karter16]

The bottom of the sreenshot shows hex B8, and other error codes that I have not tried to understand why it listed the long list....

That's just the hex representation of the data presented above. 0xB8 in decimal is 184 - the error number, 0x91 is the error type (istwert zu gross = sensor value too high), 0x24 and 0x28 are Error Frequency and Logistics Counter respectively and the remaining bytes are the 5x values recorded for each of instances 1 to 3. first 4 values are bytes and the 5th is a word.