DTC P1400 Cadillac
Cellular Phone Microphone Circuit Open
Cellular Phone Microphone Circuit Open
Description
The ignition must be in the RUN or ACC position. The system voltage is at least 9.5 V and no more than 15.5 V. All the above conditions are present for greater than 10 seconds.
Cause and Solution
The following conditions will set this DTC:The vehicle communication interface control module detects an open high resistance in the cellular phone microphone signal circuit for 10 seconds or greater.The vehicle communication interface control module detects an open high resistance in the low reference circuit for 10 seconds or greater.
Video Guide
Diagnostic Info
- DTC Code: P1400
- Brand: Cadillac