2007 Lexus ES 350FACTORY OEM SERVICE PROCEDURE

Diagnostic Trouble Code Chart

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DIAGNOSTIC TROUBLE CODE CHART

DTC Code Detection Item Trouble Area
B2271  Ignition Hold Monitor Malfunction
  1. AM2 fuse
  2. Main body ECU (Instrument panel J/B)
  3. Wire harness or connector
B2272  Ignition 1 Monitor Malfunction
  1. IG1 relay
  2. Main body ECU (Instrument panel J/B)
  3. Wire harness or connector
B2273  Ignition 2 Monitor Malfunction
  1. IG2 relay
  2. Main body ECU (Instrument panel J/B)
  3. Wire harness or connector
B2274  ACC Monitor Malfunction
  1. Main body ECU (Instrument panel J/B)
  2. ACC relay
  3. Wire harness or connector
B2275  STSW Monitor Malfunction
  1. ECM
  2. Main body ECU (Instrument panel J/B)
  3. Wire harness or connector
B2276  ACCR Signal Circuit Malfunction
  1. Main body ECU (Instrument panel J/B)
  2. ECM
  3. Wire harness or connector
B2277  Detecting Vehicle Submersion Main body ECU (Instrument panel J/B)
B2278  Engine Switch Circuit Malfunction
  1. Engine switch
  2. Main body ECU (Instrument panel J/B)
  3. Wire harness or connector
B2281  "P" Signal Malfunction
  1. Main body ECU (Instrument panel J/B)
  2. Shift lock control ECU
  3. Wire harness or connector
B2282  Vehicle Speed Signal Malfunction
  1. CAN communication system
  2. Combination meter system
  3. Main body ECU (Instrument panel J/B)
  4. Wire harness or connector
B2283  Vehicle Speed Sensor Malfunction
  1. DTC B2282 detection area
  2. Combination meter
  3. Speed sensor
  4. Skid control ECU
  5. Main body ECU (Instrument panel J/B)
  6. Wire harness or connector
B2284  Brake Signal Malfunction
  1. Stop light switch
  2. CAN communication system
  3. ECM
  4. Main body ECU (Instrument panel J/B)
  5. Wire harness or connector
B2285  Steering Lock Position Signal Circuit Malfunction
  1. Main body ECU (Instrument panel J/B)
  2. Steering lock ECU
  3. Wire harness or connector
B2286  Runnable Signal Malfunction
  1. CAN communication system
  2. ECM
  3. Main body ECU (Instrument panel J/B)
  4. Wire harness or connector
B2287  LIN Communication Master Malfunction
  1. Main body ECU (Instrument panel J/B)
  2. Certification ECU
  3. Wire harness or connector
B2288  Steering Lock Signal Circuit Malfunction
  1. Main body ECU (Instrument panel J/B)
  2. Steering lock ECU
  3. Wire harness or connector
B2289  Key Collation Waiting Time Over
  1. Main body ECU (Instrument panel J/B)
  2. Engine immobilizer system
  3. Wire harness or connector
  4. Certification ECU
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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