Code Definition

U1950 — UPB Communication Bus Fault

System: Network Communication  |  Type: Manufacturer-Specific  |  Make: Ford

About U1950

U1950 is a manufacturer-specific network communication diagnostic trouble code recorded for Ford vehicles. It belongs to the U-prefix family of codes, which covers inter-module network communication (CAN, LIN, FlexRay, or similar) faults.

Scanning & clearing: Network (U) codes report communication faults between modules. When diagnosing U-codes, checking the vehicle's CAN bus integrity, supply/ground at each module, and reading all modules for related faults is usually the first step.

U1950 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

This DTC is a Ford communication code set when a module detects a fault on the UPB network, the UART Based Protocol bus that links modules such as the Powertrain Control Module, the ABS module, the instrument cluster, the transmission control module, and the parking aid module. The UPB is a high speed single wire multiplex bus and is not fault tolerant, so any open, short, or intermittent connection on the bus wire stops communication between the affected modules. Code U1950 typically sets when the PCM, the ABS module, and the instrument cluster can no longer exchange data while the ignition i...

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