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Home >> Buick >> 2018 >> Enclave Base >> Repair and Diagnosis >> Accessories & Equipment >> Anti-Theft Systems >> Keyless Entry System And Remote Function System >> Diagnostic Information and Procedures >> DTC B3121 >> Conditions for Setting the DTC

Conditions for Setting the DTC

B3121 02 

The keyless entry control module detects a short to ground on the rear fascia keyless entry antenna signal circuit.

B3121 05 

The keyless entry control module detects a short to B+ or an open on the rear fascia keyless entry antenna signal circuit.