This code indicates that a module on the vehicle's network, typically the Powertrain Control Module (PCM), has received an illogical or corrupted data signal from the Automatic Lighting Control Module. It points to a communication issue where the lighting module is transmitting information that fails logical checks or is unreadable.
The lighting module itself has an internal hardware or software fault, preventing it from formatting or transmitting valid data.
An open, short, or high resistance in the network wiring or connectors disrupts the data signal between the lighting module and the rest of the network.
A weak battery or faulty charging system can cause the lighting module to drop offline or transmit corrupted data packets due to insufficient power.
A previously replaced module may have incompatible software or require programming to communicate properly on the specific vehicle network.
The receiving computer has an internal fault misinterpreting valid data, though this is an extremely rare cause for this code.
Yes, low system voltage can cause electronic modules to malfunction and transmit corrupted or invalid data over the network.
No, replacing the PCM is almost never the correct fix. The fault lies with the lighting module, wiring, or power supply, and replacing the computer will not resolve the underlying issue.
It may be unsafe if it affects the operation of your headlights, particularly at night or in poor weather. The vehicle should be inspected promptly to ensure proper lighting functionality.
Yes, water intrusion into the lighting module or its connectors can cause internal short circuits that corrupt the data signals, resulting in this code.