U0423
Invalid Data Received from Information Center
The Information Center is present on the data bus but the values it reports are implausible — out of range, frozen, or failing the checksum or rolling-count check. The receiving modules reject the data. Driver-display content may be wrong or missing. Causes include a faulty sensor feeding the module, internal computation errors, a software or calibration mismatch after a repair, or bus interference corrupting the frames.
The Information Center is present on the data bus but the values it reports are implausible — out of range, frozen, or failing the checksum or rolling-count check. The receiving modules reject the data. Driver-display content may be wrong or missing. Causes include a faulty sensor feeding the module, internal computation errors, a software or calibration mismatch after a repair, or bus interference corrupting the frames.
Common causes
- medium
Head unit internal fault
A plausible cause — test and verify before replacing parts.
Typical part cost: $90-1650
- medium
CAN corruption causing checksum errors
A plausible cause — test and verify before replacing parts.
Typical part cost: $90-1650
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
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Frequently asked questions
What does U0423 mean?
U0423 means "Invalid Data Received from Information Center". It is a generic OBD-II code that points to a fault in the network / communication.
What are the most common causes of U0423?
head unit internal fault; can corruption causing checksum errors; gateway module routing can messages incorrectly — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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