U0107A dead battery, A faulty TAC module, A problem with TAC module circuit, A problem with the CAN bus
A control module that expects to talk to the engine ECU has stopped receiving messages. Most commonly seen by the TCM, instrument cluster, or BCM after the ECU has been disconnected, fitted with a faulty replacement, or the CAN wiring has been damaged. Engine usually will not run while this fault is active in other modules.
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Can I keep driving? With caution
You can drive to the shop, but do not postpone the repair. The problem may worsen and damage other components.
Sistema Afectado
Red CAN · Comunicación entre módulos
Falla de comunicación en la red CAN: pérdida de datos entre las unidades de control (ECU).
Espacio para vendedores de repuestos
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Symptoms You Will Notice
What you may observe when this code appears
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Possible Causes
The components or conditions that trigger this code
- 1Throttle module unpowered
- 2CAN wiring to throttle module broken
- 3Gateway module routing CAN messages incorrectly
Estimated Cost
Approximate range in USD (varies by region and shop)
Communication modules
* Diagnosis only: $50–$150
Quick Info
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