Multiple Error Codes

[seanf]

Hi:

I have a 2009 C70 in which I recently replaced the engine from a 2008 C70 with fewer miles... (It's a long story)

The 2008 Engine has always been running well but occasionally threw a misfire code on a couple of cylinders.

Recently, the "Check Engine" light came on do I checked with a Bosch U-Scan OBDII code reader (Bluetooth to phone) and suddenly a whole host of codes are being thrown:

• P0445: Evaporative Emissions System Purge Control Valve Shorted

• P0079: Exhaust Valve Control Solenoid Circuit Low (Bank 1)

• P0076: Intake Valve Control Solenoid Circuit Low (Bank 1)

• P0245: Turbo Wategate A Solenoid Low

• P2419: Evaporative Emission System Switching Valve Control Circuit Low

• P2401: Evaporative Emission System Leak Detection Pump Control Circuit Low

• P0497: Evaporative Emission System Low Purge Flow

• P0102: Mass Or Volume Air Flow Circuit Low Input

A few questions:

First, and most important: Am I doing any damage to the car if I drive it before these are fixed?

I am hoping these are all related to a singular issue and that it is not too expensive a fix.

Does anyone have a suggestion as to what I should investigate first?

Also, I have a VIDA-DICE unit but I find it cumbersome to use... would that provide more insight?

Thanks!

[Modecia]

I have the same codes on my 08 c70. I can clear the codes and unless I turn the motor off it codes don't come back, but once I restart the motor the engine light comes right back on. So fare I have driven over 1000 miles with no problems but would love to know how to fix this. Replaced the gas cap hoping but not a fix. Any body figure this out yet?

[turtlehead]

I know this is kind of a late response, but the leak detection pump errors relate to a device that is an actual pump, located on the passenger side of the car just back of the fuel tank. I replaced mine just because I got tired of seeing the error code popping up. You have to raise the rear passenger side of the car, take off the right rear wheel and if you look up with a flashlight you'll see the pump. It has two hoses, one going up to the filler spout and another larger one going towards the fuel tank. It is attached to a bracket and I think t-25 torx screws hold it in place. I had to bend the bracket to access it, and cut off the oetiker clamps, slide the hoses off, and then twist the pump around so you can access the power connector.

Not a terribly hard job to do, just not much room where the pump is located. And honestly, this is an emissions thing so I doubt there's any damage to the vehicle if you ignore the error code.

As for the valve control errors, it could be a bad valve, dirty oil, or a bad seal. Or, if you are looking for something else to worry about, it could be a sign that the timing is out of sync. The sensor is supposed to advance the camshaft using oil pressure and when it doesn't, the computer recognizes the shaft isn't in the optimal position and throws a code. So this code may appear of you didn't do the timing belt correctly, or possibly a bad camshaft adjusting unit, though this seems unlikely if both intake and exhaust codes are appearing- I can't imagine both VVT adjusters going bad at the same time. Are you seeing any oil leaks around the camshaft seals?

[turtlehead]

By "bad valve" I meant bad VVT controller valve- not the valves inside the combustion chamber

[Brucebo]

"P0445: Evaporative Emissions System Purge Control Valve Shorted"

I just started getting the same thing, and fuse #35 keeps blowing. Most of the error codes are due to the blown fuse. A lot of these engine control devices are serviced by this fuse. The FIRST code is P0445 and it's saying the Purge Control Valve (PCV) is ***SHORTED***. What you can do is:

1. Unplug the Purge Control Valve connector.
2. Replace the fuse (15A)
3. Clear the codes.
4. Drive around for a while.

What should happen is that eventually you'll fail EVAP, as well as possibly the PCV, but NONE of the other codes will come back as the fuse will no longer blow.

Now for MY question. I have a 2012 Volvo C70. I would like to know where the Purge Control Valve is located and how easy is it to get to????

[Brucebo]

BTW, "fuse#35" is for my 2012 C70. Fuse numbering may vary between models.

[RickHaleParker]

I have a 2012 Volvo C70. I would like to know where the Purge Control Valve is located and how easy is it to get to????

On the P1s it should be right under the Turbo Charge pipe where it goes into the intake manifold.

[Rob2016]

Hello, I recently had the same exact problem and codes after going through a water flooded intersection that was deeper than I thought. I started getting a burned electrical smell in the cabin and eventually the Service Required message and engine light along with limp mode turned on.
I replaced the Turbo Control Valve because I had an extra one and it seemed like an easy repair per videos. But the fuse kept blowing out every time I inserted the key into the ignition.
So I disconnected everything I could see from the top of the engine bay including spark plugs. Turns out in my case it was the heater element on the PCV system. I moved the air box to the side, disconnected the plug to the PCV from the top of the engine bay and Presto! No more blown fuse and no more error codes.
I had actually read about this PCV issue on another thread and didn’t think it applied to my 2004.5 S40 T5 as I didn’t think my PCV system had the heater element. But it did.