DTC P0140 Subaru
O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)
O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)
Description
The output voltage of the rear O2 sensor meets one of the following conditions for longer than 0.2 seconds: Minimum output voltage gt; 0.15 V. Maximum output voltage lt; 0.55 V.
Cause and Solution
Water in the rear oxygen sensor connector or coupling connector.Wiring harness between ECM and rear oxygen sensor connector needs repair.Loose or damaged exhaust system parts.Defective rear oxygen sensor.
Video Guide
Diagnostic Info
- DTC Code: P0140
- Brand: Subaru