Toggle Side Panel

Shopping Cart

No products in the basket.

Shopping Cart

No products in the basket.

Close search
Home / DTC / U1107 — 4WD CAN timeout/Not equipped

U1107 — 4WD CAN timeout/Not equipped

Detailed page for trouble code U1107.

34,405codes
59brands
11,914generic
22,491specific
All codes P-codes (Powertrain) B-codes (Body) C-codes (Chassis) U-codes (Network/User) Tesla Alerts
Reset
Code

U1107

MITSUBISHI U — Network/User

4WD CAN timeout/Not equipped

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

Causes

  • 4WD/AWD control module not powered or not installed (vehicle not equipped)
  • Failed or intermittent CAN bus wiring (broken wire, short to ground/power)
  • Corroded/loose connectors at module or junction points
  • Blown fuse or lost ignition power to the 4WD module
  • Faulty 4WD/AWD control module
  • CAN bus termination missing or incorrect resistance

Symptoms

  • 4WD/AWD system disabled or in limp mode
  • 4WD warning lamp or communication warning lamp illuminated
  • Inability to select 4WD modes or engage transfer case
  • Related modules report communication errors or reduced functionality
  • Stored U1107 plus other CAN/communication-related DTCs

What to check

  • Confirm vehicle is supposed to have 4WD/AWD equipment for this VIN/trim
  • Read all stored DTCs and freeze frame data with a capable scan tool
  • Check battery voltage and main power/ground integrity
  • Inspect fuses and relays supplying the 4WD control module
  • Visually inspect connectors and wiring at 4WD module and junctions for corrosion or damage
  • Verify presence of 4WD control module on network with a scan tool (module enumerates on the bus)

Signal parameters

  • Typical idle voltages: CAN_H ≈ 2.5 V, CAN_L ≈ 2.5 V (both at ~2.5 V when recessive)
  • Dominant condition differential: CAN_H ~3.5–4.0 V, CAN_L ~1.0–1.5 V (difference ≈2 V)
  • Termination: two 120 Ω resistors in parallel → ≈60 Ω across CAN_H and CAN_L (measure with ignition off)
  • Bus baud rate: vehicle-specific (commonly 125 kbps or 500 kbps) — confirm with manufacturer specification

Diagnostic algorithm

  1. Verify vehicle equipment: confirm 4WD/AWD option fitted for VIN and model year.
  2. Retrieve and record all communication-related DTCs and freeze frame data.
  3. With key on (engine off), check battery voltage is stable and inspect relevant fuses/relays for 4WD module power.
  4. Visually inspect connectors and wiring at the 4WD control unit and any intermediate junctions; repair corroded or damaged connectors.
  5. Use a scan tool to see if the 4WD control module appears on the network; if it does not, proceed to wiring/power checks.
  6. Measure power and ground at the 4WD module connector pins; repair any open/low connections.
  7. Measure CAN_H and CAN_L voltages at the module connector with a DMM and compare to expected values in signal_params.
  8. Measure termination resistance across CAN_H and CAN_L with ignition off; expected ≈60 Ω. If open or incorrect, locate missing/failed terminator or shorted line.
  9. Wiggle test harness with scan tool monitoring to try to reproduce intermittent faults.
  10. If wiring, connectors and power are verified good and the module still does not communicate, consult OEM procedure for module programming and consider replacing the 4WD module.
  11. After repairs, clear codes, confirm module enumeration on the bus and perform a road test to verify proper 4WD operation.

Likely causes

  • Blown fuse or missing power/ground to 4WD module
  • Loose/damaged connector at 4WD control unit or harness splice
  • Open or shorted CAN_H or CAN_L wiring to the module
  • Module not fitted on this vehicle variant (expected condition)
  • Failed 4WD module

Fault status

⚠️ Status
No response from 4WD control module on the 4WD CAN bus — communication timeout or module not fitted.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours

Similar codes

U0073 U0100 U0121 U0122 U1101
406

Browse 406 MITSUBISHI manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

MITSUBISHI

Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email
Code

U1107

Other U — Network/User

SCP (J1850) Invalid or Missing Data for Legislated Diagnostics

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

Causes

  • 4WD/AWD control module not powered or not installed (vehicle not equipped)
  • Failed or intermittent CAN bus wiring (broken wire, short to ground/power)
  • Corroded/loose connectors at module or junction points
  • Blown fuse or lost ignition power to the 4WD module
  • Faulty 4WD/AWD control module
  • CAN bus termination missing or incorrect resistance

Symptoms

  • 4WD/AWD system disabled or in limp mode
  • 4WD warning lamp or communication warning lamp illuminated
  • Inability to select 4WD modes or engage transfer case
  • Related modules report communication errors or reduced functionality
  • Stored U1107 plus other CAN/communication-related DTCs

What to check

  • Confirm vehicle is supposed to have 4WD/AWD equipment for this VIN/trim
  • Read all stored DTCs and freeze frame data with a capable scan tool
  • Check battery voltage and main power/ground integrity
  • Inspect fuses and relays supplying the 4WD control module
  • Visually inspect connectors and wiring at 4WD module and junctions for corrosion or damage
  • Verify presence of 4WD control module on network with a scan tool (module enumerates on the bus)

Signal parameters

  • Typical idle voltages: CAN_H ≈ 2.5 V, CAN_L ≈ 2.5 V (both at ~2.5 V when recessive)
  • Dominant condition differential: CAN_H ~3.5–4.0 V, CAN_L ~1.0–1.5 V (difference ≈2 V)
  • Termination: two 120 Ω resistors in parallel → ≈60 Ω across CAN_H and CAN_L (measure with ignition off)
  • Bus baud rate: vehicle-specific (commonly 125 kbps or 500 kbps) — confirm with manufacturer specification

Diagnostic algorithm

  1. Verify vehicle equipment: confirm 4WD/AWD option fitted for VIN and model year.
  2. Retrieve and record all communication-related DTCs and freeze frame data.
  3. With key on (engine off), check battery voltage is stable and inspect relevant fuses/relays for 4WD module power.
  4. Visually inspect connectors and wiring at the 4WD control unit and any intermediate junctions; repair corroded or damaged connectors.
  5. Use a scan tool to see if the 4WD control module appears on the network; if it does not, proceed to wiring/power checks.
  6. Measure power and ground at the 4WD module connector pins; repair any open/low connections.
  7. Measure CAN_H and CAN_L voltages at the module connector with a DMM and compare to expected values in signal_params.
  8. Measure termination resistance across CAN_H and CAN_L with ignition off; expected ≈60 Ω. If open or incorrect, locate missing/failed terminator or shorted line.
  9. Wiggle test harness with scan tool monitoring to try to reproduce intermittent faults.
  10. If wiring, connectors and power are verified good and the module still does not communicate, consult OEM procedure for module programming and consider replacing the 4WD module.
  11. After repairs, clear codes, confirm module enumeration on the bus and perform a road test to verify proper 4WD operation.

Likely causes

  • Blown fuse or missing power/ground to 4WD module
  • Loose/damaged connector at 4WD control unit or harness splice
  • Open or shorted CAN_H or CAN_L wiring to the module
  • Module not fitted on this vehicle variant (expected condition)
  • Failed 4WD module

Fault status

⚠️ Status
No response from 4WD control module on the 4WD CAN bus — communication timeout or module not fitted.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours

Similar codes

U0073 U0100 U0121 U0122 U1101
9,475

The library contains 9,475 repair and diagnostic manuals. Choose a brand to open the full manual tree by year, model and trim.

ALFA ROMEO
89
AUDI
1,243
BMW
479
CADILLAC
206
CHEVROLET
456
CHRYSLER
193
DAEWOO
75
FIAT
26
GENESIS
207
HUMMER
138
HYUNDAI
371
ISUZU
132
KIA
155
LAND ROVER
320
LEXUS
280
LINCOLN
166
MERCEDES-BENZ
856
MERCURY
296
MITSUBISHI
406
PORSCHE
136
TESLA
58
TOYOTA
2,209
TRIUMPH
131
VOLKSWAGEN
626
VOLVO
221
Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email

Report

Harassment or bullying behavior
Contains mature or sensitive content
Contains misleading or false information
Contains abusive or derogatory content
Contains spam, fake content or potential malware

Block Member?

Please confirm you want to block this member.

You will no longer be able to:

  • See blocked member's posts
  • Mention this member in posts
  • Invite this member to groups
  • Message this member
  • Add this member as a connection

Please note: This action will also remove this member from your connections and send a report to the site admin. Please allow a few minutes for this process to complete.

Report

You have already reported this .