U0111 on Volkswagen
Lost Communication With Battery Energy Control Module "A"
U0111 on Volkswagen vehicles indicates lost communication with battery energy control module "a". Au7o has documented this code across 1 Volkswagen model — most commonly on T-Cross. Sets when a module loses data-bus communication with Battery Energy Control Module 'A' (the high-voltage battery management controller) and no longer receives its expected messages. Typical repair costs on Volkswagen range from $180 to $400, depending on the specific model and root cause.
Common Causes of U0111
- •Open or shorted bus wiring to the battery energy control module
- •Corroded or loose connector / poor ground
- •Blown fuse / lost low-voltage power feed
- •Low 12V battery voltage
- •Failed battery energy control module
U0111 on Volkswagen by Model
Volkswagen T-Cross(1 issue)
- Start/Stop system fails or causes stalling (battery / battery-sensor sensitivity)2019-2023
The automatic engine Start/Stop system on the T-Cross is very sensitive to battery state of charge and to the battery management sensor. Owners report the Start/Stop function stopping working (error shown in the instrument cluster), and in some cases unexpected engine stalling, often relatively early in the car's life. Common root causes are a degraded 12V battery that no longer holds the capacity the system needs, or a faulty battery/intelligent-charging sensor feeding bad data to the engine control unit. The same sensitivity contributes to perceived parasitic battery drain on short-trip use.
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View U0111 across all makes →Frequently Asked Questions
What does U0111 mean on Volkswagen?▼
U0111 stands for "Lost Communication With Battery Energy Control Module "A"." Sets when a module loses data-bus communication with Battery Energy Control Module 'A' (the high-voltage battery management controller) and no longer receives its expected messages. On Volkswagen specifically, this code is documented across 1 model.
What causes U0111 on Volkswagen vehicles?▼
Common causes on Volkswagen: Open or shorted bus wiring to the battery energy control module, Corroded or loose connector / poor ground, Blown fuse / lost low-voltage power feed, Low 12V battery voltage, Failed battery energy control module. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix U0111 on a Volkswagen?▼
Repair costs on Volkswagen range from $180 to $400, depending on the specific model and root cause.
Which Volkswagen models have U0111 documented?▼
Au7o has documented U0111 on 1 Volkswagen model: T-Cross.