I just ran KOEO and got Code 34. What can I do to fix this problem? I did a search and found what the voltages should range from, but I dont if you can adjust the voltage like the TPS. I know EVP stands for EGR Valve Position Sensor, but I am not sure how to adjust the voltage. I already cleaned the EGR valve since it was sticking (no longer get CE light) but I still get this code 34. Thanks.