2002 V70 XC Code P0246 Keeps Popping Up!

supraraleigh · Post by **supraraleigh** » 09 May 2023, 06:43

I keep getting code P0246 (Turbo/Super Charger Wastegate Solenoid "A" High). I erase it, and it comes back within one drive cycle. I have replaced the solenoid which resides near the airbox, and still this code keeps coming back. I do have another code for the oxygen sensor which also comes up. I will replace the O2 sensor and that should go away.

I have not found much about this code for Volvo's when I look online and search other forums.

Does anyone have some insight for this code and how to resolve it?

Thanks.

Post by **firstv70volvo** » 09 May 2023, 09:15

supraraleigh wrote: ↑09 May 2023, 06:43 I keep getting code P0246 (Turbo/Super Charger Wastegate Solenoid "A" High). I erase it, and it comes back within one drive cycle. I have replaced the solenoid which resides near the airbox, and still this code keeps coming back. I do have another code for the oxygen sensor which also comes up. I will replace the O2 sensor and that should go away.

I have not found much about this code for Volvo's when I look online and search other forums.

Does anyone have some insight for this code and how to resolve it?

Thanks.

Take a look at the condition of the wire insulation where it comes into the connector that plugs into the turbo control valve. The insulation can pull away or crack right where the wires go into the connector plug and short between the two wires. If this looks good check as much of the two wires as you can that goes to the valve.

supraraleigh · Post by **supraraleigh** » 12 May 2023, 05:32

Ok. I will check those wires out. If they are shorting together, then there should be continuity between the wire terminals when I probe them for resistance. I will report back when I do this.

supraraleigh · Post by **supraraleigh** » 12 May 2023, 06:33

Using my multimeter, I checked for continuity between the two green wires that plug into the wastegate solenoid. The multimeter read "1", indicating that the wires are not shorted to each other. These two green wires do however join other wires where they go into the main harness and perhaps one of the green wires is shorting with one of those wires.

Also, I checked the solenoid terminals and got 2.3 Ohms. I don't know if that is good or not.

Post by **jonesg** » 12 May 2023, 15:34

its best to look at the circuit diagram first to decipher where the wire goes and what other circuits it relates to, then look at the wires.

supraraleigh · Post by **supraraleigh** » 21 May 2023, 07:48

Update. I purchased a new Pierburg turbo solenoid part number 7.22240.13.0 on Ebay for about $35. Using the multimeter on the terminals, it read 23 Ohms. This is 10 times the value of the solenoid on the car that is in question.

I have the new one installed and erased the code P0246 with my scan tool. The code is now gone. Before, the code would pop up on the first drive cycle after erasing it, but this time it appears the issue is resolved. Also, I put in a new BOSCH oxygen sensor and that code is now gone too. The oxygen sensor I replaced was the cheapest one on ebay and had less than 3000 miles on it and was only 2 years old. So Dudes, don't buy the cheap one, just get the BOSCH. It was like $70 on Rockauto.

Conclusion: If you get code P0246, measure the resistance between the terminals on the solenoid. If the resistance value is low like mine, around 2.3 Ohms, then replace it with a NEW one.

Wow, driving the V70 XC with NO CHECK ENGINE light!!!!