P0134

Tests 192 - 197:

SYMPTOM
P0134 - 1/1 O2 SENSOR STAYS AT CENTER

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

SET CONDITION
The upstream oxygen sensor signal voltage is between 0.35 volts and 0.55 volts for 1 minute.

POSSIBLE CAUSES
- O2S sensor ground circuit open
- O2S signal circuit open
- Wiring harness intermittent defect
- O2 sensor signal circuit check with DRB III
- PCM defective