Possible Cause

DTC P1148

• Harness or connectors [A/F sensor 1 (bank 1) circuit is open or shorted.]
• A/F sensor 1 (bank 1)
• A/F sensor 1 (bank 1) heater

DTC P1168

• Harness or connectors [A/F sensor 1 (bank 2) circuit is open or shorted.]
• A/F sensor 1 (bank 2)
• A/F sensor 1 (bank 2) heater