The powertrain control module has detected a loss of serial data communication with the subscription entertainment receiver module (typically the satellite radio or telematics control unit) on the controller area network bus. This indicates the module is not responding to polling messages, which usually stems from a module failure, wiring defect, or power interruption rather than a computer malfunction.
The receiver module may suffer internal circuit board damage, memory corruption, or CAN transceiver failure that prevents it from responding to network requests.
Damage to the high or low CAN bus lines between the entertainment module and the gateway or PCM disrupts serial communication.
Moisture intrusion, pin fretting, or poor engagement at the entertainment module harness connector interrupts signal integrity.
A blown fuse, open ground path, or voltage drop caused by high resistance prevents the module from initializing.
Missing termination resistors, shorted network branches, or electromagnetic interference from aftermarket devices can garble messages.
Rare. Consider only if multiple unrelated communication codes are present and the entertainment module tests functional on the bench.
Almost never. This code almost always indicates a problem with the entertainment receiver module itself, its wiring, or its power supply. Replace the PCM only if numerous other communication codes are present and the entertainment module has been proven functional on the bench.
Yes. This code affects entertainment and telematics functions only and does not impact engine operation, emissions, or vehicle safety systems.
Voltage interruption during battery service can cause temporary communication errors. Clear the code and operate the vehicle; if it does not return, the event was likely transient.
Generally no. Infotainment and telematics components typically fall under the basic or extended manufacturer warranty rather than the emissions control systems warranty.