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Home / DTC / U05F2 — Network Communication — Invalid Data Received from Module

U05F2 — Network Communication — Invalid Data Received from Module

Detailed page for trouble code U05F2.

34,409codes
59brands
11,918generic
22,491specific
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Code

U05F2

Generic U — Network/User

Network Communication — Invalid Data Received from Module

Brand: Generic
Type: U — Network/User
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Corrupted CAN/LIN/ MOST message (noise or bit errors)
  • Faulty or misconfigured module sending malformed frames
  • Intermittent wiring or connector fault on the network bus
  • Incorrect bus termination or wiring short/ground
  • Low or unstable power/ground to the sending or receiving module
  • Software/firmware bug in a control module

Symptoms

  • Warning or malfunction indicator lamps (MIL) relating to the affected module
  • Loss or degradation of the feature(s) controlled by the sending module
  • Intermittent or permanent diagnostic trouble codes related to communication
  • Erratic sensor or actuator values displayed by vehicle systems
  • Systems revert to default or limp mode when bad data is received

What to check

  • Connect a diagnostic scan tool to read U05F2 plus any related codes and freeze frame data
  • Identify the module ID/source and note timestamp, message ID and occurrence pattern
  • Check for additional U‑codes (lost communication, bus off) that indicate broader bus issues
  • Visually inspect connectors, pins and wiring harness for corrosion, damage, or loose terminals on modules on that bus
  • Measure battery voltage and module supply/ground integrity at the affected modules
  • Scan for CAN/LIN bus error counters or bus-off status in the network master module

Signal parameters

  • Network type (CAN, LIN, MOST, FlexRay)
  • Message ID / CAN ID (hex)
  • Data Length Code (DLC) / payload length
  • Payload bytes (raw) and field offsets
  • Checksum/CRC field and validity flag
  • Timestamp / cycle time / message period

Diagnostic algorithm

  1. Read and record U05F2 and all related DTCs, freeze frame and occurrence count with a scan tool.
  2. Identify the source module/message ID reported by the receiving ECU or inferred from freeze frame data.
  3. Visually inspect connectors, backshells and wiring for the source and receiving modules; repair obvious damage.
  4. Verify module supply and ground voltages at the harness connector with key on and engine running where applicable.
  5. Check bus voltage and termination: measure differential CAN voltage and resistance between CAN_H and CAN_L (≈60 Ω total for two 120 Ω terminators).
  6. Use a scope or bus analyzer to capture live traffic and look for malformed frames, incorrect DLC, invalid CRC/checksum, or repeated error frames; note exact bytes flagged as invalid.
  7. Perform wiggle tests (with scope connected) on harnesses and connectors while observing bus for errors to locate intermittent wiring faults.
  8. If message is consistently malformed from a single module, attempt to isolate by disconnecting the suspected sender (with vehicle manufacturer procedures) and observe if errors stop.
  9. Check for recent module reprogramming or aftermarket device installation; reflash or update module software/firmware per OEM bulletins if available.
  10. Replace or repair wiring/connectors as indicated. If suspect module still transmits invalid data after electrical checks and software update, consider module replacement.
  11. After repairs, clear codes and re-test under conditions that previously produced the fault to confirm resolution.

Likely causes

  • Intermittent wiring/connector fault on the identified bus
  • Faulty module transmitting malformed packets (software or hardware)
  • Bus voltage/termination issue causing bit errors
  • Software/firmware communication bug in sending module

Fault status

⚠️ Status
Invalid data frame received from module: payload failed validation (out‑of‑range/format/checksum/timing). Receiver flagged message as invalid.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours

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Code

U05F2

LAND ROVER U — Network/User

Invalid data received from Body Control Module

Brand: LAND ROVER
Type: U — Network/User
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Corrupted CAN/LIN/ MOST message (noise or bit errors)
  • Faulty or misconfigured module sending malformed frames
  • Intermittent wiring or connector fault on the network bus
  • Incorrect bus termination or wiring short/ground
  • Low or unstable power/ground to the sending or receiving module
  • Software/firmware bug in a control module

Symptoms

  • Warning or malfunction indicator lamps (MIL) relating to the affected module
  • Loss or degradation of the feature(s) controlled by the sending module
  • Intermittent or permanent diagnostic trouble codes related to communication
  • Erratic sensor or actuator values displayed by vehicle systems
  • Systems revert to default or limp mode when bad data is received

What to check

  • Connect a diagnostic scan tool to read U05F2 plus any related codes and freeze frame data
  • Identify the module ID/source and note timestamp, message ID and occurrence pattern
  • Check for additional U‑codes (lost communication, bus off) that indicate broader bus issues
  • Visually inspect connectors, pins and wiring harness for corrosion, damage, or loose terminals on modules on that bus
  • Measure battery voltage and module supply/ground integrity at the affected modules
  • Scan for CAN/LIN bus error counters or bus-off status in the network master module

Signal parameters

  • Network type (CAN, LIN, MOST, FlexRay)
  • Message ID / CAN ID (hex)
  • Data Length Code (DLC) / payload length
  • Payload bytes (raw) and field offsets
  • Checksum/CRC field and validity flag
  • Timestamp / cycle time / message period

Diagnostic algorithm

  1. Read and record U05F2 and all related DTCs, freeze frame and occurrence count with a scan tool.
  2. Identify the source module/message ID reported by the receiving ECU or inferred from freeze frame data.
  3. Visually inspect connectors, backshells and wiring for the source and receiving modules; repair obvious damage.
  4. Verify module supply and ground voltages at the harness connector with key on and engine running where applicable.
  5. Check bus voltage and termination: measure differential CAN voltage and resistance between CAN_H and CAN_L (≈60 Ω total for two 120 Ω terminators).
  6. Use a scope or bus analyzer to capture live traffic and look for malformed frames, incorrect DLC, invalid CRC/checksum, or repeated error frames; note exact bytes flagged as invalid.
  7. Perform wiggle tests (with scope connected) on harnesses and connectors while observing bus for errors to locate intermittent wiring faults.
  8. If message is consistently malformed from a single module, attempt to isolate by disconnecting the suspected sender (with vehicle manufacturer procedures) and observe if errors stop.
  9. Check for recent module reprogramming or aftermarket device installation; reflash or update module software/firmware per OEM bulletins if available.
  10. Replace or repair wiring/connectors as indicated. If suspect module still transmits invalid data after electrical checks and software update, consider module replacement.
  11. After repairs, clear codes and re-test under conditions that previously produced the fault to confirm resolution.

Likely causes

  • Intermittent wiring/connector fault on the identified bus
  • Faulty module transmitting malformed packets (software or hardware)
  • Bus voltage/termination issue causing bit errors
  • Software/firmware communication bug in sending module

Fault status

⚠️ Status
Invalid data frame received from module: payload failed validation (out‑of‑range/format/checksum/timing). Receiver flagged message as invalid.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours

Similar codes

U0100 U0101 U0073 U0140 U0131
413

Browse 413 LAND ROVER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

LAND ROVER

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