May 3, 2009 · My check engine light has been on with a P0138 High voltage code, bank 1 sensor 2. I replace the 02 sensor near the manifold (before the cat) as told to...

Apr 10, 2010 · Running rich? Codes P0132, P0135, P0138 Jump to Latest 40K views 21 replies 12 participants last post by scott.sheckles713 Jun 1, 2023 Z

May 30, 2025 · The P0138 code is set when the Engine Control Module (ECM) detects that the rear O2 sensor signal voltage remains excessively high for an extended period of time. Inspect the O2 sensor …

Jul 30, 2008 · Or will the P0138 code still show up even though the light went off? Should I just reset the computer and see if the light comes back on or stays off for good? I am going on a 200 mile trip …

Apr 20, 2009 · 99 XJ Sport. Replaced both O2 sensors over last year, am getting p0138 bank 1 sensor 2 code and p0141.e Just changed aft sensor and it came back. Checked harness, looks good, …

Jan 22, 2009 · P0138 is the high-voltage code for the downstream O2 sensor. If the sensor does not generate a variable voltage output after a fixed amount of time, the PCM substitutes a fixed value of …

Aug 3, 2015 · Hi all, I got the p0138 and p0158 (high voltage to O2 sensor) codes up.2002 high output, Is this telling me to replace the O2 sensors or is it something completely different? Engine seems to …

Jul 2, 2020 · P0138 and P0141 Jump to Latest 3.7K views 21 replies 4 participants last post by Z_MAN Jul 10, 2020 Z

Jul 23, 2013 · OK, my check engine light came on last night. I bought a scanner and it shows the code "P0132" Oxygen sensor circuit high voltage bank 1 sensor 1. Other than changing oil, plugs, wires …

May 3, 2013 · P0138-1/2 O2 SENSOR SHORTED TO VOLTAGE When Monitored: With battery voltage greater than 10.4 volts, engine running for more than 4 minutes and coolant temperature above 180°F.