2019-2024 Ram 1500 OCM Non-Responsive (S2623000057)

Owners of 2019-2024 Ram 1500 (DT) vehicles may encounter an issue where the Occupant Classification Module (OCM) becomes non-responsive after recent service, particularly if the OCM seat foam assembly was replaced. This condition typically results in an illuminated Air Bag warning light on the instrument cluster, indicating a potential problem with the restraint system. This is a critical safety concern that requires attention.

Symptoms

If your 2019-2024 Ram 1500 is affected by the Ram 1500 OCM non-responsive issue, you will likely observe an "Air Bag warning light illuminated" on your dashboard. Technicians using diagnostic tools like wiTECH will find that the replacement OCM seat foam assembly is non-responsive. This indicates a communication failure or an invalid data reception within the vehicle's restraint system.

Fault Codes / DTCs

When the Ram 1500 OCM non-responsive condition occurs, one or more of the following diagnostic trouble codes (DTCs) may be stored in the vehicle's system:

• U0154-00: LOST COMMUNICATION WITH OCCUPANT CLASSIFICATION MODULE
• B00A0-81: OCCUPANT CLASSIFICATION SYSTEM-INVALID SERIAL DATA RECEIVED
• B223D-00: OCM DTC PRESENT
• U0452-64: IMPLAUSIBLE DATA RECEIVED FROM RESTRAINTS CONTROL MODULE-SIGNAL PLAUSIBILITY FAILURE

These codes point to a failure in communication or data integrity concerning the Occupant Classification Module, which is vital for proper airbag deployment based on occupant presence and weight.

Important Warnings and What Owners Should Know

Stellantis engineering is actively investigating these complaints, as detailed in internal communication S2623000057. It is crucial for owners and technicians to be aware of the following advisories:

• Do not replace the OCM again: The manufacturer explicitly states, "It is not recommended to replace the OCM again as it will most likely not repair the condition." This prevents unnecessary part replacements and labor costs for a problem that stems from a deeper, unresolved issue.
• Do not release vehicle with Air Bag light on: It is also advised, "It is not recommended to release a vehicle with an Air Bag light on and/or DTCs set for the restraint system." An illuminated Air Bag warning light indicates a potential malfunction in the safety system, which could compromise occupant protection in a crash.
• Future service update expected: Stellantis anticipates a "future service update" to address this problem. This means a permanent fix is under development, and owners should monitor for further announcements.

Discussion and Current Status

This STAR Online Publication, Case Number S2623000057, indicates that engineering is currently investigating the complaints related to the Ram 1500 OCM non-responsive issue. The document, with a release date of October 2026, suggests that this is a forward-looking communication about a known and ongoing problem that is yet to have a definitive repair procedure. The advice to not replace the OCM again highlights that the root cause is not simply a faulty OCM part, but likely a software or system integration issue that requires a more comprehensive solution.

What to Do

If your 2019-2024 Ram 1500 is exhibiting the symptoms of a non-responsive OCM and an illuminated Air Bag warning light, it is important to take action. Contact your authorized Ram dealership to report the issue. While a definitive repair is not yet available, your dealer can document the problem using case number S2623000057 and keep you informed of any future service updates. Ensure that your vehicle is not driven with an active Air Bag warning light, as this compromises safety.

NHTSA ID: 11038518