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Diagnostic Trouble Code Chart

WARNING: This page is about a different car, the 2007 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.

If a malfunction code is displayed during the DTC check, check the suspected area listed for that code in the table below, and proceed to the appropriate page.

Lighting system 

DTC DETECTION CONDITION CHART

DTC No. Detection Item Suspected Area
B1244  Light Sensor Circuit Malfunction
  1. Automatic light control sensor
  2. Harness or connector
  3. Instrument panel J/B assembly
B2410  Headlight Swivel ECU LH Communication Malfunction
  1. Headlight swivel ECU LH
  2. Harness or connector
  3. AFS ECU
B2411  Headlight Swivel ECU RH Communication Malfunction
  1. Headlight swivel ECU RH
  2. Harness or connector
  3. AFS ECU
B2412  Headlight Swivel Motor LH Malfunction
  1. Headlight swivel motor LH
  2. Headlight swivel ECU LH
  3. Harness or connector
  4. AFS ECU
B2413  Headlight Swivel Motor RH Malfunction
  1. Headlight swivel motor RH
  2. Headlight swivel ECU RH
  3. Harness or connector
  4. AFS ECU
B2414  Steering Position Sensor Malfunction
  1. Steering sensor
  2. Harness or connector
  3. AFS ECU
B2415  Vehicle Speed Sensor Malfunction
  1. Skid control ECU
  2. Harness or connector
  3. AFS ECU
B2416  Height Control Sensor Malfunction
  1. Suspension control ECU (w/ air suspension)
  2. Height control sensor sub-assembly rear RH
  3. Harness or connector
  4. AFS ECU
B2417  Headlight Beam Level Control Motor LH Malfunction
  1. Headlight beam level control motor LH
  2. Harness or connector
  3. AFS ECU
B2418  Headlight Beam Level Control Motor RH Malfunction
  1. Headlight beam level control motor RH
  2. Harness or connector
  3. AFS ECU
B2419  BEAN Communication Malfunction
  1. Multiplex network body ECU
  2. Multiplex communication system
  3. Harness or connector
  4. AFS ECU
B2420  AFS ECU Malfunction AFS ECU
B2421  Steering Neutral Point Automatic Correction Incompletion
  1. Steering sensor
  2. Harness or connector
  3. Skid control ECU
  4. AFS ECU
B2423  AFS ECU Installation Error AFS ECU
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