OBD-II code · Network
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.
Is it safe to drive with U0423?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- PossibleHead unit internal fault
- PossibleCAN corruption causing checksum errors
- Less likelyGateway module routing CAN messages incorrectly
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Usually unaffected
- Parts involved
- Information Display Module, Can Bus Wiring
Related codes
- U0420Invalid Data Received from Power Steering Control Module
- U0421Invalid Data Received from Throttle/Pedal Position Sensor
- U0422Invalid Data Received from Body Control Module
- U0424Invalid Data Received from HVAC Control Module
- U0425Invalid Data Received from Vehicle Immobilizer Control Module
- U0426Invalid Data Received from Vehicle Immobiliser Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.