P0141 1/2 O2 Sensor Heater Failure

SYMPTOM
P-0141 1/2 O2 SENSOR HEATER FAILURE

WHEN MONITORED
With the Engine at idle immediately after a cold start (Engine < 147°F and Battery temp ± 27°F of Engine temperature).

SET CONDITION
O2 Sensor voltage > 3V for 30 to 90 seconds.

POSSIBLE CAUSES
- 1/2 O2 sensor connector damaged
- 1/2 O2 sensor gnd circuit open
- ASD relay output circuit open
- 1/2 O2 sensor failure
- 1/2 O2 sensor heater element failure
- 1/2 O2S heater failure does not reoccur