2022-2025 Stellantis Reduced Power & MIL P2453

Owners of 2022-2025 Stellantis vehicles may encounter a concerning combination of symptoms: a noticeable "Reduced Power" condition and the illumination of the "Malfunction Indication Light (MIL) on". This problem, detailed in Mopar STAR Online Publication S2509000008, is frequently accompanied by specific diagnostic trouble codes (DTCs) related to the particulate filter pressure sensor.

This technical service bulletin (TSB) addresses the root cause of these symptoms, which can lead to a frustrating driving experience and an illuminated MIL. If you are experiencing a "Stellantis reduced power MIL" warning, understanding this issue is crucial.

Symptoms

Vehicle owners may observe the following symptoms:

• Reduced Power: The vehicle's engine performance feels diminished.
• Malfunction Indication Light (MIL) on: The check engine light illuminates on the dashboard, often referred to as the "MIL light on".

Fault Codes / DTCs

When scanned, the vehicle's onboard diagnostic system may log one or more of these trouble codes:

• P2453: Particulate Filter Pressure Sensor "A" Circuit Range/Performance
• P2455: Particulate Filter Pressure Sensor "A" Circuit High
• P2461: Particulate Filter Pressure Sensor "B" Circuit High

Diagnosis and Trigger Conditions

Further investigation into the "Stellantis reduced power MIL" issue indicates that condensation can accumulate inside the tubes connecting the exhaust pipe to the particulate filter difference pressure sensor. This condensation can cause the sensor to provide inaccurate pressure readings, leading to the reported symptoms and the triggering of DTCs P2453, P2455, and P2461.

Repair Procedure Summary

The repair procedure outlined in Mopar STAR Online Publication S2509000008 focuses on isolating and removing this condensation:

1. Inspect Sensor Connection: First, technicians should check the electrical plug connection at the particulate filter pressure sensor for any issues.
2. Remove Tubes: Both tubes connected to the particulate filter pressure sensor (Part Number 46352506) must be carefully removed.
3. Clean and Dry Hoses: The hoses leading towards the particulate filter should then be cleaned and dried using compressed air. It is critical that compressed air is not used in the direction of the sensor itself. Gravity drying is sufficient for the sensor, as complete drying is not essential.
4. Reassemble: Once the parts are dried and confirmed to be free of visible damage or water, they should be re-assembled.

After reassembly, the vehicle's operation should be retested. The repair is considered complete if the DTCs do not return.

Required Parts

The tubes connected to the particulate filter pressure sensor are identified by Part Number 46352506.

Important Warnings

• When cleaning the hoses, compressed air must not be used in the direction of the sensor! Gravity drying is sufficient for the sensor itself.
• This document serves as a record of past experiences and does not authorize warranty repairs. It captures known cases that appear similar to the reported vehicle symptom or condition. The technician is responsible for determining the appropriate course of action.

Owner Action

If your 2022-2025 Stellantis vehicle is exhibiting reduced power and the Malfunction Indication Light (MIL) is illuminated, especially with DTCs P2453, P2455, or P2461, it is recommended to have your vehicle inspected by a qualified service technician. They can diagnose the issue and perform the necessary cleaning and drying procedure as described in Mopar STAR Online Publication S2509000008.

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Source: NHTSA ID: 11022015