P0144

Tests 297 - 301:

Tests 302 - 305:

SYMPTOM
P-0144 1/3 O2 SEN SHORTED TO VOLTAGE

WHEN MONITORED
With the engine running for more than 2 minutes and coolant temperature above 170 degrees F.

SET CONDITION
The oxygen sensor voltage is above 1.2 volts.

POSSIBLE CAUSES
- O2 sensor 1/3 terminal observable defect
- O2 sensor 1/3 voltage not > 4.97 volts
- PCM terminal observable defect
- O2 sen 1/3 wiring harn int open ckt or sht to volt
- O2 sensor 1/3 signal circuit short to voltage
- O2 sensor 1/3 signal ckt inter short to voltage
- O2 sensor 1/3 wiring harness observable defect
- PCM def (O2 sensor 1/3 sht to V)