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Fault Code U0100

Code meaning, symptoms, possible causes, part number, and estimated cost.

U0100

Lost Communication With ECM/PCM

Severity: Critical

Lost Communication with Engine Computer.

Part Details

Part Name

Engine Computer (ECM/PCM) / CAN Wiring

Reference P/N (OEM)

N/A

General part number for this fault code — not necessarily for your specific vehicle

Estimated Cost

₪300 - ₪5,000

Engine Location

Engine Bay / CAN Network

Symptoms

  • Engine does not start
  • Many Systems Disabled
  • Multiple warning lights

Possible Causes

  • 1Defective ECM
  • 2Defective CAN Wiring
  • 3Blown ECM Fuse
  • 4Weak Battery

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