Fault Family System: Network (U-Codes) 11 SAE Codes

Invalid Data Instrument Display Module

Diagnostic & Technical Explanation

U0423 sets when the instrument cluster or a driver display reports a gauge or indicator value that fails a plausibility check against the source sensor's actual reading -- for example a fuel or temperature gauge value that cannot match the sending sensor's live data. Because the cluster typically just displays data gathered from other modules, invalid data here often traces to a corrupted display configuration or a damaged internal driver circuit rather than the original sensor.

These 11 diagnostic trouble codes share one detection mechanism and one repair path, which is why MechanicDB groups them into a single authored fault family rather than repeating the same explanation 11 times.

Codes in this family (11)

Code	Definition	Repair coverage
U0423	Invalid Data Received From Instrument Panel Cluster Control Module	4 ranked fixes
U0457	Invalid Data Received From Information Center A	4 ranked fixes
U0458	Invalid Data Received From Information Center B	4 ranked fixes
U0459	Invalid Data Received From Head Up Display	4 ranked fixes
U0461	Invalid Data Received From Audible Alert Control Module	4 ranked fixes
U0556	Invalid Data Received From Front Display Interface Module	4 ranked fixes
U0557	Invalid Data Received From Front Controls Interface Module A	4 ranked fixes
U0558	Invalid Data Received From Front Controls/Display Interface Module	4 ranked fixes
U055E	Invalid Data Received From Front Controls Interface Module B	4 ranked fixes
U05B2	Invalid Data Received From Comfort and Convenience Display A	4 ranked fixes
U05B3	Invalid Data Received From Comfort and Convenience Display B	4 ranked fixes

What this page does not show

This page publishes the fault mechanism and the code index. The licensed dataset adds, for every one of the 15,886 codes, the full authored repair set (56,729 procedures in total) with the fields deliberately withheld here:

Procedures 2..n after the first-listed procedure
Aftermarket parts cost ranges in USD (est_parts_cost_min/max_usd)
Professional labor-hour estimates (est_labor_hours)
Step-by-step diagnostic and repair instructions
Replacement-part mappings and catalog lookups
6,637 manufacturer-specific OEM codes across 32 makes ($149 tier)

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