P0145 1/3 O2 Sensor Slow Response

SYMPTOM
P-0145 1/3 O2 SENSOR SLOW RESPONSE

WHEN MONITORED
With engine temperature > 147 degrees F, after reaching a vehicle speed of 10 mph, and the throttle remaining open (off idle) for two minutes, bring the vehicle to a stop, allow engine to idle with the transmission in drive (auto) or in neutral (manual).

SET CONDITION
The oxygen sensor signal voltage is switching from below 0.27 volts to above 0.62 volts and back fewer times than required.

POSSIBLE CAUSES
- Engine mechanical problem
- 1/3 O2 sensor ground ckt high resistance
- 1/3 O2 sensor ground ckt poor connection
- 1/3 O2 sensor signal ckt high resistance
- 1/3 O2 sensor signal ckt poor connection
- 1/3 O2 sensor slow response
- Exhaust leak
- 1/3 O2 Sensor slow response no reoc