Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2005HIGHLANDER LIMITED, FWDREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESMULTIPLEX COMMUNICATION SYSTEM - DIAGNOSTICSDIAGNOSTIC TROUBLE CODE CHART
2005 Toyota Highlander Limited, FWD
Diagnostic Trouble Code Chart
2005 Toyota Highlander Limited, FWDSECTION Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODES (DTC) LIST
| DTC | Description |
|---|---|
| DTC B1211/11 | DRIVER DOOR ECU COMMUNICATION STOP |
| DTC B1214, B1215 | DOOR SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT/GND SHORT) |
| DTC B1241 | BODY ECU SWITCH CIRCUIT DIAGNOSIS |
| DTC B1261 | ECM (ENGINE ECU) COMMUNICATION STOP |
| DTC B1262/62 | A/C ECU COMMUNICATION STOP |
| DTC B1269/69 | THEFT DETERRENT ECU COMMUNICATION STOP |
| DTC B1271 | COMBINATION METER ECU COMMUNICATION STOP |
| DTC B1273/73 | SLIDING ROOF ECU COMMUNICATION STOP |
- BODY ECU DIAGNOSTIC TROUBLE CODEBODY ECU DIAGNOSTIC TROUBLE CODE
DTC Code Lamp Code Diagnostic item Diagnostic Result B1200 Normal code Normal Normal B1211 11 Power window regulator master switch assy (door ECU) communication stop No communication from door ECU for more than 10 seconds B1214 - Communication bus +B battery system short Communication circuit and +B battery system short B125 - Communication bus (body ground) short Communication bus and body ground short B1241 41 Body ECU switch circuit diagnosis Switch is ON or stuck B1261 - ECM communication stop No communication from ECM for more than 10 seconds B1262 62 Air conditioner amplifier assy (A/C ECU) communication stop No communication from A/C ECU for more than 10 seconds. B1269 69 Theft warning ECU assy (theft deterrent ECU) communication stop No communication from theft warning ECU for more than 10 seconds B1271 - Combination meter assy (meter ECU) communication stop No communication from meter ECU for more than 10 seconds B1273 73 Sliding roof drive gear sub-assy (sliding roof ECU) communication stop No communication from sliding roof ECU for more than 10 seconds
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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.