Code Definition

U2116 — Lost Communication with Combination Meter

System: Network Communication  |  Type: Generic (OBD-II Standard)  |  Make: Isuzu

About U2116

U2116 is a generic (obd-ii standard) network communication diagnostic trouble code recorded for Isuzu 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.

Because U2116 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The control module, typically the Body Control Module or Engine Control Module, communicates with the combination meter (instrument cluster) over the CAN data network. DTC U2116 is set when the module does not receive valid or expected CAN messages from the combination meter for a calibrated period while the ignition is ON. This indicates a loss of communication on the network, which may be caused by a fault in the meter, the CAN circuits, the power or ground supply to the meter, or a network integrity issue. When the code is active the instrument cluster may go blank, reset intermittently, dr...

Join TaT to view the complete code information and diagnostic details.

Quick Facts