How To Replace Jeep O2 Sensor

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How To replace an O2 Sensor on a Jeep Wrangler YJ and read OBD codes without a reader. Replacing the O2 sensor is not hard, figuring out why your jump is sputtering is. Hope you enjoy this as we go over how to replace the O2 sensor and the bloopers we have along the way. Hope this helps and you enjoy our mishaps at the end of this video.

How To Replace O2 Sensor || Jeep S...
How To Replace O2 Sensor || Jeep Sputtering E01

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How To Replaced Jeep o2 Sensor - Chris Does What TH   

Installing an O2 sensor, if not rusty, very easy! If it is rusty, spray it down with some lubricate before you try to break the o2 sensor loose. Other than that this has to be a very easy sensor to replace. The reason we replaced our O2 sensor is because of an OBD error code of 52 “A rich air/fuel mixture has been indicated by an abnormally rich correction factor”. This means that the O2 sensor is detecting an abnormal mixture, which means the sensor could be faulty, or something else is causing the lean condition. When this happens the ECU will put the Jeep in limp mode and greatly reduce your performance.

Diagnostic trouble code and descriptions Video Below Codes:

11*: No crank reference signal detected during cranking. Timing belt skipped one or more teeth; or intermittent loss of either camshaft position sensor or crankshaft position sensor.

12*: Battery or computer recently disconnected within the last 50 start cycles). This is a very common code. Will not trigger a “Check engine light”.

13**: No change in Manifold Absolute Pressure sensor (MAP) from start to run.

14**: MAP sensor voltage too high or too low.

15**: No speed sensor signal detected.

17*: Engine stays cold too long. Bad thermostat or temp sensor.

21**: Oxygen sensor detection neither rich or lean -or-

21**: Oxygen sensor input voltage stayed above normal operating range.

22**: Coolant temperature sensor signal above or below acceptable voltage.

23**: Intake air temperature sensor signal above or below acceptable voltage.

24**: Throttle position sensor signal above or below acceptable voltage.

25**: Automatic Idle Speed (AIS) motor driver circuit shorted.

27*: One of the Injectors output drivers does not respond properly to control signal.

33*: Air conditioning clutch relay circuit open or shorted. If your Jeep doesn’t have AC you will always get this code. Will not trigger a “Check engine light”.

34*: Speed control vacuum or vent solenoid circuits open or shorted. Switch is above or below acceptable voltage.

35*: (XJs only) Cooling fan relay circuit open or shorted.

37: Relationship between engine speed and vehicle speed indicates no torque converter clutch engagement. An open or shorted condition detected in the torque converter part throttle unlock solenoid control circuit. Incorrect input state detected for the Park/Neutral switch. Auto only.

41**: Alternator field control circuit open or shorted.

42*: An open or shorted condition detected in the auto shutdown relay circuit. An open condition detected in the ASD relay output circuit. An open or shorted condition detected in the fuel pump relay control circuit. An open circuit between PCM and fuel gauge sending unit. Circuit shorted to voltage between PCM and fuel gauge sending unit. No movement of fuel level sender detected.

43: Peak primary circuit current not achieved with maximum dwell time. Misfire detected in one or more cylinders 1 thru 6. (4 and 6 cyls).

44*: Open or shorted condition in the engine coolant temp sensor circuit or a problem exists in the PCMs battery temp voltage circuit.

46**: Battery voltage too high during charging.

47**: Battery voltage sense input below target charging during engine operation. Also, no significant change detected in battery voltage during active test of generator output circuit.

51**: A rich air/fuel mixture has been indicated by an abnormally rich correction factor.

52**: A rich air/fuel mixture has been indicated by an abnormally rich correction factor.

53*: PCM module internal problem.

55*: PCM has finished telling you the codes. This means you are done reading codes.

62: EMR mileage cannot be stored in EEPROM.

62: PCM failure SPI mile not stored.

63*: Controller cannot write to EEPROM.

64: Catalytic converter efficiency failure.

65: Power steering switch failure.

****This information was gotten from the Chrysler FSM, Quadratec & various posts on WranglerBoard forum.

Jump To In Video:

  • 1:29 How to get your Jeep OBD codes without a reader
    https://www.youtube.com/watch?v=a1y-81EPXe4&t=89s
  • 2:43 How to replace an O2 sensor
    How to replace an O2 sensor - Chris Does What
  • 5:40 Our thoughts on changing the O2 sensor
    How To Replaced Jeep o2 Sensor - Chris Does What
  • 7:17 Bloopers during O2 sensor install
    How To Replaced Jeep o2 Sensor - Chris Does What Bloopers

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