U0140 on Jeep vehicles A module has stopped hearing from the body control module

A model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.

Bulletins and campaigns Jeep filed with NHTSA whose summary names U0140. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

• 9100641 Service bulletin
  2025-08-05 · Power Train
• Symptoms/Condition: Shifter reports loss communication AND NO OTHER MODULES report the condition. Diagnostic: Please make sure ONLY shifter reports loss communication. If there are other modules reporting loss communication, then follow the existing service procedure Repair Procedure: 1. Verify Complaint - ESM reports a Loss of Communication (LOC) DTC, but no other modules do. - If multiple module
• S2308000122 Service bulletin
  2023-10-04 · Engine And Engine Cooling — Engine — Crank/Camshaft Position Sensor
• Vehicle is a no crank/no start with the following DTCs, as well as a no crank/no start condition: U0164, U0140, U0151, U0155
• 9100218 Service bulletin
  2023-10-26 · Structure
• Body Control Module For concern related to DTC U0140 - Lost Communication with Body Control Module, please follow published diagnostic information for this DTC to ensure all module connections are secure. Please check all the connections at BCM from other modules that could potentially report a loss of communication with the BCM and ensure that they are fully seated as per diagnostic information.

A stored code names the test that failed, never the part that caused it. The record above is what Jeep and its owners have filed about it; the code’s page across every make has the whole file.