JackALope3

2009 HHR with 230k miles. Very reliable car, I use it as a beater. For the past couple of years I would get the P010 code. I replaced the intake solenoid twice and the code would come back. This last time I first checked continuity on both solenoids with an ohm meter and confirmed they were not shorted. I then cleaned both solenoids with CRC electronic cleaner and applied dielectric grease. Code P010 came back 2 days later.
I’ve done the obvious stuff but I’m not going to get worked up about this. I still get about 28 mpg, so I don’t think engine performance is affected. I use my foxwell code reader to clear
the annoying check engine light about every other day. But I know the engine is fine so I don’t lose any sleep over this.

RJ_RS_SS_350

You don't seem to be looking for help? Why dig up a nearly 10 year old thread?

Oldblue

P0010 doesn’t indicate the intake or exhaust, it indicates the VVT solenoids, as you replacing the one, replace the other

https://www.obd-codes.com/p0010


I moved this to it’s own thread

donbrew

P0010 indicates the intake CIRCUIT has a problem, not necessarily the solenoid. It could be the electrical element in the solenoid but you have replaced that so, look for wires frayed or burned.
If you test the solenoids they should read 8-12 ohms. The connections are control and low ref, both go to the ECM. The cheap ones are known to be problematic.
If anyone has messed with the ECM connectors there is a chance a pin is bent or pushed out the back.
Don't clear codes, it fixes nothing. When the problem no longer exists they will clear themselves.

PulpFriction

These are old cars. There can be broken or corroded connectors or wires inside insulation that looks fine. You can check for high resistance in the wires while wiggling them around.

If a solenoid valve isn't working correctly, the engine isn't running optimally, and economy could suffer, and other problems could ensue. Imagine all the trouble that could result from the intake valve opening and closing at the wrong time.