Jeep Code P242B is a diagnostic code that indicates a malfunction in the Exhaust Gas Temperature Sensor circuit related to Bank 1 Sensor 3. This code is the result of a 2-trip fault, which causes the Powertrain Control Module (PCM) to illuminate the Malfunction Indicator Lamp (MIL) and disable active regeneration mode. To resolve this code, a Jeep owner must identify the cause of the malfunction and take the necessary steps to fix it. Causes of this code can include a faulty Exhaust Gas Temperature Sensor 1/3, a wiring issue, or a software issue. Solutions to this code can include replacing the sensor, repairing the wiring, or updating the software to the latest version.
Causes and Solutions for Jeep Code P242B
| Cause | Solution |
|---|---|
| Faulty Exhaust Gas Temperature Sensor 1/3 | Replace the sensor |
| Wiring Issue | Repair the wiring |
| Software Issue | Update the software to the latest version |
| Damaged PCM | Replace the PCM |
Faulty Exhaust Gas Temperature Sensor 1/3
When a Jeep owner receives a P242B diagnostic code, it’s usually because the Exhaust Gas Temperature Sensor 1/3 (EGT 1/3) is malfunctioning. In order to resolve this issue, the faulty sensor must be replaced. This can be accomplished by disconnecting the negative battery cable, removing the wiring harness and replacing the sensor.
Wiring Issue
If the wiring connecting the EGT 1/3 to the PCM is damaged or loose, it can cause the P242B diagnostic code to appear. To fix this issue, the wiring must be inspected and repaired. This can be done by a qualified technician or an experienced Jeep owner.
Software Issue
If the software on the PCM is outdated, it can lead to a P242B diagnostic code. To resolve this, the software must be updated to the latest version. This can be done with a specialized tool and a qualified technician.
Damaged PCM
In rare cases, the PCM can become damaged and cause the P242B diagnostic code to appear. To fix this issue, the PCM must be replaced. This can be done by a qualified technician or an experienced Jeep owner.
Conclusion
Jeep Code P242B is a diagnostic code that indicates a malfunction in the Exhaust Gas Temperature Sensor circuit related to Bank 1 Sensor 3. The causes for this code can include a faulty EGT 1/3, a wiring issue, or a software issue. Solutions to this code can include replacing the sensor, repairing the wiring, or updating the software to the latest version. In rare cases, the PCM may need to be replaced. To ensure the best resolution to this code, it is recommended to take your Jeep to a qualified technician and have them diagnose and repair the Jeep Code P242B issue.
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