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Home / DTC / U1103 — PDC CAN timeout/Not equipped

U1103 — PDC CAN timeout/Not equipped

Detailed page for trouble code U1103.

34,528codes
59brands
11,925generic
22,603specific
All codes P-codes (Powertrain) B-codes (Body) C-codes (Chassis) U-codes (Network/User) Tesla Alerts
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Code

U1103

MITSUBISHI U — Network/User

PDC CAN timeout/Not equipped

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

Causes

  • PDC module fault or missing module (physically removed or not fitted)
  • Power or ground fault to the PDC module
  • Open, short, or high resistance in CAN-H/CAN-L wiring or connectors
  • Failed or intermittent connector/corrosion at the PDC or gateway
  • CAN bus termination missing or shorted (wrong resistance)
  • Faulty gateway or other module interfering with bus traffic

Symptoms

  • PDC/parking sensor warnings or system disabled message on dash
  • No parking distance beeps or readout when reversing
  • Other body modules show communication errors or 'not equipped' messages
  • CAN-related DTCs present in multiple modules
  • Loss of features tied to PDC (automatic braking/pilot parking) if equipped

What to check

  • Use a capable scan tool to confirm U1103 and read related U- and B- codes from all modules
  • Check vehicle build data/option list to confirm whether PDC is fitted
  • Inspect PDC module connector for corrosion, bent pins, or poor mating
  • Verify PDC module power and ground voltages with key on
  • Measure CAN-H and CAN-L voltages at the PDC connector (key on, engine off)
  • Check CAN bus termination resistance (approx. 60 ohms across CAN_H and CAN_L) with battery disconnected

Signal parameters

  • Typical idle voltages: CAN_H ≈ 2.5 V, CAN_L ≈ 2.5 V (vehicle-specific variations possible)
  • Dominant state differential voltage typically ~2 V (CAN_H higher, CAN_L lower) when active
  • Bus termination: combined resistance between CAN_H and CAN_L ≈ 60 ohms (two 120Ω terminators in parallel)
  • Bus idle should be stable with no excessive noise; if CRC/frame errors present, sniff with scope or bus analyzer
  • Bus baud rate varies by network - check service info (commonly 500 kbps for powertrain, body networks may vary)

Diagnostic algorithm

  1. Confirm the freeze frame and full DTC list from all modules. Note other network faults.
  2. Verify whether the vehicle is actually equipped with PDC using VIN/build data. If not equipped, document and clear codes.
  3. If equipped, visually inspect the PDC module and harness. Repair any obvious damage or poor connections.
  4. Check fuses/relays and measure module supply voltage and ground continuity. Repair any power/ground issues.
  5. With key on, measure CAN_H/CAN_L at the PDC connector. Compare to expected idle levels. If abnormal, trace wiring toward gateway.
  6. Check termination resistance between CAN_H and CAN_L with battery disconnected. Repair missing or shorted terminators.
  7. Use an oscilloscope or CAN bus analyzer to observe traffic and error frames while scanning. Identify missing frames or bus noise.
  8. Disconnect adjacent modules one at a time (if safe and practical) to isolate a possible shorting device.
  9. If wiring and power good, consider reflashing or replacing the PDC or gateway module per manufacturer procedure.
  10. After repairs, clear codes and perform a drive/test cycle to confirm fault does not return.

Likely causes

  • Blown fuse or missing power/ground to the PDC module
  • Damaged connector or corroded pins at the PDC harness
  • Open or short on the local CAN lines between PDC and gateway
  • PDC module failed or physically not installed for this vehicle specification
  • Gateway or BCM not forwarding messages due to internal fault or software issue

Fault status

⚠️ Status
PDC CAN timeout / Not equipped — no communication received from the Parking Distance Control module
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.5 - 3.0 hours

Similar codes

U1100 U1101 U1102 U1121 U0073 B1785
406

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

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