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DTC Descriptor: Notes

WARNING: This page is about a different car, the 2005 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.

This diagnostic procedure supports the following DTC:

DTC B3121 Keyless Entry Antenna 3 Performance

This vehicle has DTCs which include DTC Symptoms. For more information on DTC Symptoms, refer to DTC Symptom Description in Vehicle DTC Information.

DTC B3121

DTC Symptom DTC Symptom Descriptor
02 Short to Ground
05 Short to Battery or Open
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