Possible Cause

DTC P1148

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

DTC P1168

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