U0583

Code

Generic U — Network/User

Invalid or Unsupported Data Received From Control Module

Brand: Generic

Type: U — Network/User

Views: UK: 20 EN: 20 RU: 24

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Corrupt or malformed network message from another module
Software mismatch or incorrect calibration/version between modules
Faulty control module sending invalid data
Damaged wiring, poor connector contact, or high resistance on bus lines
Physical layer issues on the network (missing/incorrect termination, excessive bus load, noise)
Low or unstable vehicle voltage (battery/charging) causing communication errors

Symptoms

Malfunction Indicator Lamp (MIL) or dash warning light(s) illuminated
One or more vehicle functions inoperative or intermittent (e.g., cluster, HVAC, ABS, transmission)
Intermittent faults or flickering instrumentation/messages
Other diagnostic trouble codes present related to comms or specific modules
Noisy or erratic behavior from affected module(s)

What to check

Read and record all U and manufacturer-specific codes and freeze frame data with a full OEM-capable scan tool
Inspect for related codes from other modules to identify source/recipient
Visually inspect connectors, pins and wiring on suspected modules for corrosion, bent pins, water intrusion, or damage
Verify battery voltage and charging system health (battery state of charge, alternator output, parasitic drains)
Use a CAN/LIN/FlexRay bus monitor or scope to capture traffic and look for malformed frames, continuous errors, or bus-off conditions
Check for correct termination resistors on CAN bus (approx. 60 Ω measured across CAN-H and CAN-L with power off)

Signal parameters

CAN: typical physical layer voltages ~0–5 V, dominant/recessive levels between CAN_H and CAN_L
CAN message fields to monitor: Arbitration ID, DLC (data length), payload bytes, checksum/CRC if used by manufacturer
Expected message frequency (periodic messages) and timeout thresholds for the affected signals
Bus error counters: TX/RX error counts and bus-off status for nodes
LIN: master/slave frame ID, wake/sleep timing, and checksum type (classic/enhanced)
Message diagnostic parameters: sequence counters, CRC/CRC8 presence, diagnostic session identifiers

Diagnostic algorithm

Record all codes and module names, note freeze frame and last occurrence conditions. Clear codes and attempt to reproduce; note whether code returns and any related symptoms.
Check battery/restoring power stability: measure battery voltage at rest and while cranking; verify alternator output. Repeat test under load if necessary.
Visually inspect wiring and connectors for the modules involved. Repair any damaged pins, corrosion, or poor connections. Reseat connectors.
Use a scan tool to query all modules for their health, firmware part numbers, and any additional stored events. Look for a module that reports invalid data or repeats errors.
Monitor the vehicle network with a suitable CAN/LIN analyzer while reproducing the fault. Capture frames and look for malformed frames, incorrect DLC, unexpected arbitration IDs, or missing periodic messages.
If malformed messages are identified, isolate by disconnecting branch modules (e.g., infotainment, telematics, aftermarket units) one at a time and re-check bus traffic and code status.
Check termination resistors (approx. 60 Ω measured across CAN_H to CAN_L with power off) and measure bus voltages with key on to confirm expected recessive levels.
If a single module is suspicious (sends bad frames or has firmware mismatch), attempt a reprogram/update to the latest OEM calibration. Follow OEM reflash procedure and verify power stability during the operation.
If software update does not resolve and module continues to present invalid messages, replace the suspected faulty control module and reconfigure/pair as required by OEM procedures.
After repairs, clear codes and perform a road test or functional test to confirm the issue is resolved and no new comms errors appear.

Likely causes

Faulty module firmware or recent unsuccessful reflash
Loose, corroded, or water-damaged connector on CAN/LIN lines
Short to battery/ground on a data line or partial short causing bit errors
Missing or incorrect 120 Ω termination resistor(s) on CAN bus
Aftermarket alarm/telematics device sending unsupported CAN frames
Low supply voltage or charging system fluctuation during module message transmission

Fault status

⚠️ Status

Invalid or unsupported data received from another control module over the vehicle network; a communications/integrity fault requiring network and module checks.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1-3 hours