P0138 Diagnostic Trouble Code Discussion for January 2018
Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit High Voltage
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| Help Request | Posted | |
| 2011 GMC Sierra 2500 HD SLE 6.0L MIL Lamp on VIN: 1GT22ZCG9B P0138: Rear Oxygen Sensor Voltage too High. Getting Stumped on this one, truck came in with code for rear O2, we diagnosed and replaced, scan tool readings were maxed out at 1.275mv, bias voltage is 1.9V going to sensor and had 1.2 - 1.25 returning back on Low Sig wire. It came back a week later wit... |
January 10, 2018 | |
| 2011 GMC Sierra 2500 HD SLE 6.0L MIL Lamp on VIN: 1GT22ZCG9B P0138: Rear Oxygen Sensor Voltage too High. Getting Stumped on this one, truck came in with code for rear O2, we diagnosed and replaced, scan tool readings were maxed out at 1.275mv, bias voltage is 1.9V going to sensor and had 1.2 - 1.25 returning back on Low Sig wire. It came back a week later wit... |
January 14, 2018 | |
| 2011 Lexus ES350 3.5L MIL Lamp on VIN: JTHBK1EG1B P0138: Oxygen sensor circuit high voltageBank 1 Sensor 2. ... Had code P0138 Oxygen sensor circuit high voltage(Bank 1 Sensor 2). Sensor was replaced twice, with Denso and NGK. Am now waiting on a factory sensor. Found bank 1 sensor 2 is 120+ MV higher than bank 2 sensor 2 also. B1S2 impedance is 300 Ohms higher... |
January 24, 2018 |
