The U0492 code indicates that the vehicle’s vehicle communication network has received data from the television (infotainment) system that does not conform to the expected format or timing. This is a diagnostic trouble code that triggers when the Body Control Module (BCM) or another control module detects invalid data on the CAN bus from the TV unit.
A malfunctioning TV module can send corrupted packets or timing errors that trigger the U0492 code.
Poor electrical contact on the CAN bus wiring harness can cause data integrity problems, leading to the code.
A bent or damaged pin in the TV connector can disrupt data transmission, producing invalid data.
In rare cases, the BCM may misinterpret valid data as invalid due to internal software glitches.
An outdated firmware version or incorrect calibration can cause the TV to send non‑compliant data.
Although uncommon, a PCM that incorrectly processes incoming data could raise U0492, but this is usually a false positive.
No. The U0492 code almost never indicates a PCM failure. The issue is typically related to the television unit or its wiring.
It means the data packet received on the CAN bus from the TV unit does not match the expected structure, size, or timing defined by the vehicle’s communication protocol.
Yes, updating the television unit’s firmware or the vehicle’s body control module software can resolve data format issues, but only if the problem is software‑related.