Code
U0582
Generic
U — Network/User
Invalid Data Received from Control Module
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EN: 1
RU: 0
AI status
Completed
Completed
100%
Causes
- Corrupted or malformed CAN/LIN message on vehicle network
- Faulty or misconfigured control module (software/coding mismatch)
- Intermittent or poor connection in wiring, connectors or grounds
- Bus wiring short, open, or improper termination
- Low battery voltage or power supply issues to one or more modules
- Aftermarket device or recent module replacement introducing incompatible messages
Symptoms
- Malfunction indicator lamp (MIL) or warning lights illuminated
- Loss or intermittent operation of functions controlled over the network (e.g., ABS, traction, HVAC, instrument cluster)
- Stored or active network communication diagnostic trouble codes
- Random or repeatable feature failures tied to a specific module
- Possible reduced drivability if critical module data is rejected
What to check
- Read all modules with an OEM-level scan tool; record U-codes, freeze frame, and related data
- Check for presence and configuration of the transmitting module(s)
- Visually inspect connectors, harnesses, and grounding points for damage or corrosion
- Measure battery voltage and check charging system health
- Use a scope or CAN bus analyzer to capture waveforms (look for noise, missing/garbled frames, wrong voltages)
- Check bus termination resistance (approx. 120 Ω between CANH and CANL)
Signal parameters
- Typical resting CAN voltages: CAN_H ≈ 2.5 V, CAN_L ≈ 2.5 V; dominant state CAN_H ≈ 3.5 V, CAN_L ≈ 1.5 V (differential ≈ 2.0 V)
- Common CAN data rates: 125 kbps, 250 kbps, 500 kbps (verify vehicle-specific bus speed)
- Bus termination: ~120 Ω across CAN_H and CAN_L (two 60 Ω resistors to battery/internal networks)
- Message elements to check: arbitration ID, DLC (data length code), payload bytes, sequence/counter bytes, checksum if used
- LIN: idle near battery voltage (pull-up), dominant ≈ 0 V; typical baud rates 19.2 kbps–20 kbps
Diagnostic algorithm
- Connect an OEM-capable scan tool and record U0582 plus any related codes and freeze-frame data from all modules.
- Clear codes, then attempt to reproduce the condition while monitoring live data and module presence.
- Identify which module is the sender of the invalid message (use a bus analyzer or monitor logical message IDs and content).
- Inspect power, ground, and connector integrity at both the receiving and suspected transmitting modules.
- Measure CAN/LIN bus voltages and capture waveforms at multiple nodes; look for noise, missing recessive/dominant levels, or arbitration conflicts.
- Check termination resistance and look for shorts to battery or ground. Repair wiring or connector faults as found.
- If wiring is good, verify module software versions and coding; compare to OEM specifications and update/reflash if required.
- If a specific module is confirmed to transmit malformed data, repair or replace that module per manufacturer procedure.
- After repairs, clear codes and verify normal communication and absence of the U0582 code during a full drive cycle.
- Consult manufacturer service information or technical bulletins for known software/service updates or special procedures.
Likely causes
- Failed or improperly configured ECU/TCU/BCM sending incorrect message payload or ID
- Damaged CAN/LIN wiring (chafed insulation, corrosion, pinched harness)
- Loose/oxidized connector pins at gateway, module, or splice
- Vehicle software mismatch after partial reflashing or module swap
- Faulty network termination resistor or missing termination
Fault status
Status
Control module received invalid or unexpected network data from another module (message payload/format/check failed).
Repair difficulty: Medium
Diagnostic time: 0.5-3.0 hours
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