2024 Jeep Wrangler P1CEA Check Engine Light TSB

Symptoms

Owners of 2024 Jeep Wrangler vehicles may observe a "Malfunction Indicator Lamp/Check Engine Lamp On" illuminated on their dashboard. This is often described as the "MIL/CEL on" and typically occurs without any accompanying driveability symptoms. If your 2024 Jeep Wrangler is showing a "Malfunction Indicator Lamp/Check Engine Lamp On" without accompanying driveability issues, and you suspect a Jeep Wrangler P1CEA code, this information is relevant.

Understanding DTC P1CEA

Upon further inspection, a diagnostic trouble code (DTC) for P1CEA may be found stored in the Powertrain Control Module (PCM). This specific code, P1CEA, indicates a "BOOST SIDE EVAP PURGE SYSTEM PERFORMANCE" issue. This suggests a problem within the evaporative emissions system related to the purge function.

Diagnosis Procedure

Before performing the standard diagnostic procedure for the Jeep Wrangler P1CEA DTC, technicians should first perform a preliminary check. This involves inspecting all hose connections located between the purge valve, the intake manifold, and the ejector tee to ensure they are secure and free from leaks.

If all hose connections are found to be secure, the next critical step is to remove the fresh air duct. Following its removal, a borescope must be used to carefully inspect the ejector tee. The primary objective of this inspection is to identify any melted plastic or other deformities that could be obstructing airflow within the component. The document includes visual references, such as an image of the fresh air duct assembly and a close-up image showing "Melted Plastic at Ejector Tee," to guide technicians in identifying the issue.

Repair Strategy

If obstructions, such as melted plastic or other deformities, are discovered within the ejector tee during the borescope inspection, the recommended action to address the Jeep Wrangler P1CEA issue is to replace the fresh air duct assembly. After the replacement, the vehicle's system should be retested to confirm that the DTC P1CEA has been resolved.

Should the P1CEA DTC return even after the fresh air duct replacement and retest, technicians are then advised to proceed with the published diagnostic procedure specific to this DTC. This ensures a comprehensive approach to resolving the "BOOST SIDE EVAP PURGE SYSTEM PERFORMANCE" concern.

Important Considerations for Technicians

This document, identified as Case Number S2425000001, serves as a record of past experiences and does not authorize warranty repairs. It's important to note that this communication does not provide any definitive conclusions about the root cause of vehicle issues. Instead, it compiles previous cases that appear similar to the reported symptom or condition. Technicians are considered the experts and are responsible for deciding on the appropriate course of action based on their professional diagnosis.

Owner Action

If your 2024 Jeep Wrangler is displaying a "Malfunction Indicator Lamp/Check Engine Lamp On" and you suspect a P1CEA code, it is recommended to visit an authorized Jeep service center. Inform them about the illuminated warning light and mention the possibility of the P1CEA DTC. The technicians will follow the diagnostic steps outlined in manufacturer communication S2425000001 to address the "BOOST SIDE EVAP PURGE SYSTEM PERFORMANCE" concern.

Source: NHTSA ID: 11005204