P0138

O2 Sensor Circuit Bank 1 Downstream - Short To Battery.

P0138 - O2 sensor circuit bank 1 downstream sensor.: Last occurrence - maximum signal

Possible causes:
1. Short circuit C0606/11 (YU) - battery.
2. Short circuit C0606/7 (NU) - battery.
3. Connectors C0606, C0643.
4. O2 Sensor.

1. Short circuit C0606/11 (YU) - battery.
SHORT_CIRCUIT
Check resistance < 5.0 Ohms.

2. Short circuit C0606/7 (NU) - battery.
SHORT_CIRCUIT
Check resistance < 5.0 Ohms.

3. Connectors C0606, C0643.
CONNECTOR
Check for connector not correctly latched, backed out pins, damaged pins, corroded pins

4. O2 Sensor.
No detail available for this fault