Causes and Fixes P0138: O2 Sensor Circuit High Voltage Bank-1 Sensor-2

Описание к видео Causes and Fixes P0138: O2 Sensor Circuit High Voltage Bank-1 Sensor-2

How to fix a P0138 engine Code: O2 Sensor Circuit High Voltage Bank-1 Sensor-2
The computer (ECM/PCM) uses the upstream O2 Sensor-1 to modify the air/fuel mixture.
The downstream Sensor-2 works with Sensor-1 to monitor the catalytic converter.

How To Test Oxygen Sensor Heater Element Video:
   • How To Test Oxygen Sensor Heated Elem...  

Possible Causes of a P0138 Code
Faulty Air Fuel Ratio 02 Bank-1 Sensor-2
Wiring - Open Short - Blown Fuse

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