430 P1012, P1016, P1528, and P1527 codes F430 - Resolved

Hey all - I know the error code list is floating around with "all" the codes, but it's definitely still missing some! So I thought I'd share my solution to these two and I haven't seen them posted anywhere.

I replaced my variator solenoids on the right side, (similar process to changing valve cover gaskets since the solenoids live in the valve cover on the 430), and when I reassembled it I got two new errors:

P1012 - Unknown trouble code
P1016 - Unknown trouble code

I couldn't find these online anywhere. And long story short, the two phase sensors (exhaust and induction) were both loose. Make sure they're bolted down nice and tight! Hand tight, but tight!

They're number 28 on the diagram. They're right by each other, top and bottom.

I figure this could be helpful especially should these sensors fail for any reason. Luckily they're easy to get to. Also, because of the space between the codes (1012 and 1016) that there are some other codes in between or around those numbers for the ones on the other side. Don't know that for a fact, but it would makes sense.

Also worth mentioning, I got the P1528 for the variator solenoid. That was what initiated this whole project. That code isn't on the master code sheet either but there are other threads talking about. Sometimes it's caused by a bad connection like melted wires, sometimes it's a bad connection because of oil leaking from the part itself in which case you have to replace it. The latter was my issue. The code is for the bottom solenoid. I believe the top is P1552. I *think* that's the case because when I was messing with the connection for the top solenoid that code popped up. The top is "intake" the bottom is "exhaust." Besides the code throwing a CEL, the only other noticeable symptom for the code was the exhaust note. I have an S-line exhaust that sings, and she stopped singing. The tone got lower and the car was down on power. The power drop wasn't really that noticeable if you're not looking for it. So it was really the exhaust note changing that gave it away. I can imagine if people have less shouty exhausts that you may not hear the difference at all.

Anyway, I hope this helpful for anyone who needs to chase these down! Total PITA.

Huge thanks to @flash32 and @LorenzoR . They were great, both of them helped on out phone calls and texts. LorenzoR with the disassembly and flash32 with troubleshooting these damn codes! Awesome community here.


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Ah, crap, yes. P1552! Wish you could edit titles... I updated the rest.