LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2009 >> GS 450h >> Repair and Diagnosis (Single Page) >> Electrical >> Starter >> Smart Access System (Keyless Start) (Diagnostics - Introduction) >> Smart Access System With Push-Button Start >> Diagnostic Trouble Code Chart >> Diagnostic Trouble Code Chart
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic Trouble Code Chart

PUSH-BUTTON START

DTC No. Detection Item Trouble Area See
B2271 Ignition Hold Monitor Malfunction - Power source control ECU
- AM2 fuse
- Wire harness
Refer to DTC B2271: Ignition Hold Monitor Malfunction
B2272 Ignition 1 Monitor Malfunction - Power source control ECU
- Wire harness
Refer to DTC B2272: Ignition 1 Monitor Malfunction
B2273 Ignition 2 Monitor Malfunction - Power source control ECU
- IG2 relay
- Wire harness
Refer to DTC B2273: Ignition 2 Monitor Malfunction
B2274 ACC Monitor Malfunction - Power source control ECU
- Wire harness
Refer to DTC B2274: ACC Monitor Malfunction
B2275 STSW Monitor Malfunction - Power source control ECU
- Hybrid control system
- Wire harness
Refer to DTC B2275: STSW Monitor Malfunction
B2277 Detecting Vehicle Submersion Power source control ECU Refer to DTC B2277: Detecting Vehicle Submersion
B2278 Power Switch Circuit Malfunction - Power source control ECU
- Power switch
- Wire harness
Refer to DTC B2278: Power Switch Circuit Malfunction
B2281 "P" Signal Malfunction - Power source control ECU
- Shift lock system
- Wire harness
Refer to DTC B2281: "P" Signal Malfunction
B2282 Vehicle Speed Signal Malfunction - Power source control ECU
- Combination meter
- Wire harness
Refer to DTC B2282: Vehicle Speed Signal Malfunction; DTC B2283: Vehicle Speed Sensor Malfunction
B2283 Vehicle Speed Sensor Malfunction - Power source control ECU
- Combination meter
- Speed sensor
- Skid control ECU
- Wire harness
Refer to DTC B2282: Vehicle Speed Signal Malfunction; DTC B2283: Vehicle Speed Sensor Malfunction
B2284 Brake Signal Malfunction - Power source control ECU
- Stop light switch
- Lighting system
- Wire harness
Refer to DTC B2284: Brake Signal Malfunction
B2285 Steering Lock Position Signal Circuit Malfunction - Power source control ECU
- Electric steering lock
- Wire harness
Refer to DTC B2285: Steering Lock Position Signal Circuit Malfunction; DTC B2288: Steering Lock Signal Circuit Malfunction
B2286 Runnable Signal Malfunction - Power source control ECU
- Hybrid control system
- Wire harness
Refer to DTC B2286: Runnable Signal Malfunction
B2287 LIN Communication Master Malfunction - Power source control ECU
- Certification ECU
- Wire harness
Refer to DTC B2287: LIN Communication Master Malfunction
B2288 Steering Lock Signal Circuit Malfunction - Power source control ECU
- Electric steering lock
- Wire harness
Refer to DTC B2285: Steering Lock Position Signal Circuit Malfunction; DTC B2288: Steering Lock Signal Circuit Malfunction
B2289 Key Collation Waiting Time Over - Power source control ECU
- Entry function
- Engine immobiliser system
- Power switch
- Key
- Wire harness
Refer to DTC B2289: Key Collation Waiting Time Over
NOTE:
  • Check the connector connection to the terminal to make sure that there is no abnormally such as a loose connection, deformations, etc.
  • Make sure that the power supply to the ECU and connection of the body ground are normal (DTC B2271 is not output).