GASKET KIT 5P1013 - Caterpillar

Use this procedure to troubleshoot the electrical system if a problem is suspected with the NOX sensor group. Also, use this procedure if one of the diagnostic codes or the event code in Table 1 is active or easily repeated.
Table 1
J1939 Code and Description Comments
3221-2
Aftertreatment #1 Intake Wide-Range O2 Reading Stable : Erratic, Intermittent, or Incorrect The catalyst intake oxygen sensor has detected an internal problem which results in data that is unstable and/or not in the correct format.
Replace the oxygen sensor
3221-3
Aftertreatment #1 Intake Wide-Range O2 Reading Stable : Voltage Above Normal The catalyst intake oxygen sensor has detected high supply voltage at the sensor.
The code is logged.
3221-4
Aftertreatment #1 Intake Wide-Range O2 Reading Stable : Voltage Below Normal The catalyst intake oxygen sensor has detected low supply voltage at the sensor.
The code is logged.
3221-12
Aftertreatment #1 Intake Wide-Range O2 Reading Stable : Failure The catalyst intake oxygen sensor has detected an internal problem with the sensor.
Replace the oxygen sensor
3221-14
Aftertreatment #1 Intake Wide-Range O2 Reading Stable : Special Instruction The catalyst intake oxygen sensor has detected an internal problem with the sensor heating element. The sensor was unable to reach operating temperatures within the predetermined amount of time.
If a CAN Data Link -9 diagnostic is active or logged against the NOx sensor, troubleshoot the -9 diagnostic before replacing the sensor.
If there is no -9 diagnostic, then replace the oxygen sensor.
3222-12
Aftertreatment #1 Intake Gas Sensor Heater Preliminary FMI : Failure The catalyst intake oxygen sensor has detected an internal problem with the sensor heating element.
Replace the oxygen sensor The oxygen sensor is used to monitor the emission level of the engine exhaust by measuring the oxygen concentration in the exhaust stream. The ECM utilizes the signal from the oxygen sensor to adjust the air/fuel ratio. This strategy ensures that the engine burns the fuel efficiently. One oxygen sensor is used for this application. The oxygen sensor is mounted at the catalyst inlet. The sensor circuit consists of an oxygen sensor and a voltage converter that is used to power the sensor circuit. The sensor generates a signal that is proportional to the concentration of oxygen which is communicated to the engine ECM via the CAN data link. This type of sensor is a wideband oxygen sensor that can self-diagnose internal problems. The sensor will notify the engine ECM of an issue when detected. Some diagnostics reported from the Oxygen sensor will indicate that the sensor has failed and will need replaced. If repeat failures occur, check the sensor installation for any contributing factors such as exposure to moisture or wiring harness high heat exposureThe oxygen sensor exposure limits should not exceed the following:- Controller ambient temperature range -40 to 105 C- Grommet temperature greater than 240 C- Cable temperature greater than 200 CEach oxygen sensor utilizes a heating element to heat the sensing element of the sensor.Note: The sensor has an operating range of 600° C to 800° C (1100° F to 1500° F). The tip of the sensor may be