rgreen4

I don't have a VST I've eliminated the the air pump by diconnecting it, and the solenoid w/ the resistor and the relay is new as well as 2 new O2 sensors, what could be left, isn't this fix suppose to take care of this?

Well I soldered in a new diode in my ECU between pins 32 and 37 w/ the band on the diode towards pin 37, bypassed the solenoid w/ a 33ohm resistor, unplugged the air pump and guess what CEL comes right back on w/ P0410 code. If someone can explain how to attach a pic I'll post a pic of the ECU.Any more ideas on this?

Ok Thanks for the info wouldn't have known unless I had opened an ECU before. won't get to it until the weekend got to clean up after SANDY.

I'll check the solenoid for resistance, problem is that it is one of the first things pulled from a junker along w/ a working air pump. Any one have a radio shack part number for a proper resistor also can someone fill me in on determining which is pin 32 and 37 in the ECU?Thanks

No I didn't because it was mentioned earlier that installing it in the wire harness allows the mod to stay w/ the car in case the ecu was changed. I'll try the ecu mod next but I'll get new diode. Just to go over it again what is the proceedure for determining pin 32 and 37?

What should the resistance be? Current flow should be from anode to cathode right. The diode from Radio Shack is so small (approx 1/8 ") that it was almost impossble to see any markings on it so before soldering I connected 1 wire which I thought was the anode side of the diode to a 1.5 volt AA battery then measured the voltage on the other side and got 1.0 volt then I soldered the wires to it and installed the diode.

Yes mine does look like the Pic above, I even use the same color coded wires for for my diode to be sure that the wires were connected correcly and I tested the diode for current flow before soldering to be sure that it would go from 32 to 37.

98 V70 t5 w/ 224k I've tried all the suggestions to delete the SAS P0410 soldered in the diode in the wire harness, and unplugged the air pump and I've replaced both o2 sensors and I'm still getting a P0410 code. I've left the solinoid and relay intact as suggested. I've got a NYS inspection due next month so any help would be greatly appreciated.