HARNESS AS-WIRING 5367945 - Caterpillar

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. 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.
3231-2
Aftertreatment #1 Outlet 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
3231-3
Aftertreatment #1 Outlet 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.
3231-4
Aftertreatment #1 Outlet 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.
3231-12
Aftertreatment #1 Outlet Wide-Range O2 Reading Stable : Failure The catalyst intake oxygen sensor has detected an internal problem with the sensor. Replace the oxygen sensor.
3231-14
Aftertreatment #1 Outlet 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. Replace the oxygen sensor.
3232-12
Aftertreatment #1 Outlet 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 sensors are used to monitor the emission level of the engine exhaust by measuring the oxygen concentration in the exhaust stream. The Electronic Control Module (ECM) utilizes the signal from the oxygen sensors to adjust the air/fuel ratio. This strategy ensures that the engine burns the fuel efficiently. Two oxygen sensors are used for this application. One of the oxygen sensors is mounted in the turbocharger exhaust outlet. The other oxygen sensor is mounted in the output flange of the catalytic converter. Each sensor circuit consists of an oxygen sensor and a voltage converter that is used to power both sensor circuits.The sensors generate a signal that is proportional to the concentration of oxygen which is