the Helm gives a little more detail on code 13:

Quote

FAULT MODE:
Harness open.
Sensor deterioration

COMPUTER INPUT:
Intermediate voltage

FAIL-SAFE FUNCTION OF COMPUTER:
Fuel is not compensated by o2 signal

ENGINE CONDITION:
Exhaust is worsened

VEHICLE CONDITION:
No noticeable abnormal operation


when you replaced the sensor did you use a universal one that required cutting & splicing the harness? maybe a bad connection there... I frequently see "sensor safe" designation on silicone gasket goo - any chance you did some work using other stuff that could have fouled the sensor?

2.6 Trooper
2.0 Impulse Turbo