Conditions for Setting the DTC

B2455 02 

The telematics communication interface control module detects a short to ground in the cellular phone microphone signal circuit for 10s or greater.

B2455 04 

The following conditions will set this DTC:

• The telematics communication interface control module detects an open/high resistance in the cellular phone microphone signal circuit for 10s or greater.
• The telematics communication interface control module detects an open/high resistance in the microphone low reference circuit for 10s or greater.