DTC Troubleshooting: P0135 (41)
  1. Check for continuity between under-hood fuse/relay box connector D (20P) terminal No. 9 and body ground.
Is there continuity?
YES -
Go to Step 18 .
NO -
Repair open in the wire between the A/F sensor (Sensor 1) and the under-hood fuse/relay box, then go to Step 24 .
  1. Disconnect ECM connector A (44P).