1. JeepGirl1013

    Help Diangnosing P0161, P0158, P0740

    Ok so I need a new O2 sensor- as does everyone. But the P0158 just popped: O2 sensor circuit high voltage. Is this a sign I really need to replace the O2 sensor? Is there anything else I should be looking at? P0740 just started for me this week. I have been experiencing a long crank time...
  2. M

    P0158 O2 sensor error code

    My 2004 Wrangler Sahara, automatic, 4.0L threw a P0158 code today: P0158 2/2 O2 Sensor Shorted To Voltage Oxygen sensor input voltage maintained above normal operating range. 1. Should I replace this sensor? 2. Where is this sensor located? 3. Does anyone have the part # for this sensor...