P0134

O2 Sensor Circuit Bank 1 Upstream - Open Circuit.

P0134 - O2 sensor circuit bank 1 upstream sensor.: Last occurrence - signal fault

Possible causes:
1. Short circuit C0606/9 (Y) - C0644/3 (Y).
2. Connectors C0606, C0644.
3. O2 Sensor.

1. Short circuit C0606/9 (Y) - C0644/3 (Y).
OPEN_CIRCUIT
Check resistance > 1M Ohms.

2. Connectors C0606, C0644.
CONNECTOR
Check for connector not correctly latched, backed out pins, damaged pins, corroded pins

3. O2 Sensor.
No detail available for this fault