This diagnostic trouble code indicates a communication error where the primary control module receives invalid or implausible data from the secondary lighting control module. It suggests a disruption in the signal network rather than a mechanical failure within the engine or transmission. This issue typically affects exterior lighting operation and vehicle network integrity.
Physical damage or corrosion in the harness connecting the lighting module is the most common cause of data errors.
A high-resistance ground at the lighting control module can corrupt data signals sent over the network.
The Lighting Driver Control Module B may have internal component failure preventing valid data transmission.
Moisture entering electrical connectors can cause short circuits or signal interference on the communication bus.
Weak battery or charging system voltage can cause modules to send erratic data or reset unexpectedly.
Failure of the PCM or BCM is rare and should only be considered after all wiring and lighting module checks are confirmed.
No, this code rarely indicates a failure of the main engine computer; wiring or the lighting module is the usual cause.
Yes, but exterior lighting may not function properly, creating a safety hazard at night.
Only if the issue was temporary; underlying wiring or module faults will cause the code to return.
No, this is a network communication issue related to the vehicle lighting system.