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Diagnostic Trouble Code Chart

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.

Lighting System 

DIAGNOSTIC TROUBLE CODE - LIGHTING SYSTEM

DTC Code Detection Item Trouble Area
B1244  Light Sensor Circuit Malfunction
  1. Automatic light control sensor
  2. Wire harness or connector
  3. Main body ECU RH (Cowl side junction block RH)
B2412  Headlight Swivel Motor LH Malfunction
  1. Headlight swivel motor LH (Headlight assembly LH)
  2. Wire harness or connector
  3. AFS ECU
B2413  Headlight Swivel Motor RH Malfunction
  1. Headlight swivel motor RH (Headlight assembly RH)
  2. Wire harness or connector
  3. AFS ECU
B2414  Steering Position Sensor Malfunction
  1. Steering angle sensor
  2. Wire harness or connector
  3. AFS ECU
B2415  Vehicle Speed Sensor Malfunction
  1. Skid control ECU
  2. Wire harness or connector
  3. AFS ECU
B2416  Height Control Sensor Malfunction
  1. Height control sensor
  2. Wire harness or connector
  3. AFS ECU
B2417  Headlight Beam Level Control Motor LH Malfunction
  1. Headlight leveling motor LH
  2. Wire harness or connector
  3. AFS ECU
B2418  Headlight Beam Level Control Motor RH Malfunction
  1. Headlight leveling motor RH
  2. Wire harness or connector
  3. AFS ECU
B2419  BEAN Communication Malfunction
  1. Multiplex communication system
  2. Wire harness or connector
  3. AFS ECU
B2420  AFS ECU Malfunction AFS ECU
B2428  Vehicle Speed Signal Malfunction
  1. Brake control system
  2. AFS ECU
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