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Fault Code B0815

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

B0815

Immobilizer Transponder Antenna Circuit

Severity: High

This code indicates a malfunction in the immobilizer transponder antenna circuit. This antenna reads the chip in the key and allows starting, and a fault in it will prevent the vehicle from recognizing the key and starting.

Part Details

Part Name

Immobilizer Transponder Antenna

Reference P/N (OEM)

N/A

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

Estimated Cost

₪600 - ₪1800

Engine Location

Around ignition switch/steering column

Symptoms

  • Vehicle unable to start
  • Key not recognized
  • Security light flashing
  • Hard starting

Possible Causes

  • 1Faulty antenna
  • 2Broken/shorted wiring to the antenna
  • 3Issue with the key itself (chip)
  • 4Corrosion in connections

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