2001 Infinity QX4 Fault Code P1135 Explanation and Diagnosis

Model: Infinity QX4 Fault Code: P1135 Posted: 2006-08-30 20:30

I recently diagnosed a Powertrain Diagnostic Trouble Code P1135 on a 2001 Infinity QX4 at Checker Auto. The code indicates an issue with the oxygen sensor heater circuit, specifically related to the upstream oxygen sensor in Bank 1. This fault can lead to poor fuel efficiency and misfires if not addressed promptly. I'm seeking clarification from other users or experts on what this code means for my vehicle's performance and how it should be repaired. Any insights would be greatly appreciated. Thanks, Tom