LEXUS fault codes
Coverage shown is Toyota data: 12,945 codes · 876 vehicle records · 1,973 ECU records · 43,462 live-data parameters.
LEXUS shares fault-code data with Toyota. Data may not cover LEXUS-specific systems.
Codes 12,945
| Code | Description | Brands | System |
|---|---|---|---|
| U062A | Lost communication with A/C refrigerant distribution valve actuator 'A' | 3 | Network |
| U062B | Lost communication with A/C refrigerant distribution valve actuator 'B' | 3 | Network |
| U062C | Lost communication with A/C refrigerant distribution valve actuator 'C' | 9 | Network |
| U062D | Lost communication with A/C refrigerant distribution valve actuator 'D' | 9 | Network |
| U062E | Lost communication with A/C refrigerant expansion valve actuator | 10 | Network |
| U062F | Lost communication with coolant pump 'C' | 9 | Network |
| U0630 | Lost communication with engine coolant temperature sensor 4 | 3 | Network |
| U0631 | Lost communication with engine coolant temperature sensor 5 | 4 | Network |
| U0632 | Lost communication with fan 1 | 9 | Network |
| U0633 | Lost communication with fan 2 | 9 | Network |
| U0634 | Lost communication with Hybrid/EV battery pack coolant temperature sensor 'A' | 3 | Network |
| U0635 | Lost communication with Hybrid/EV battery pack coolant temperature sensor 'B' | 3 | Network |
| U0636 | Lost communication with Hybrid/EV battery pack coolant control valve 'A' | 3 | Network |
| U0637 | Lost communication with Hybrid/EV battery pack coolant control valve 'B' | 4 | Network |
| U0638 | Lost communication with Hybrid/EV electronics coolant temperature sensor 'A' | 3 | Network |
| U0639 | Lost communication with Hybrid/EV electronics coolant temperature sensor 'B' | 3 | Network |
| U063A | Lost communication with Hybrid/EV electronics coolant temperature sensor 'C' | 3 | Network |
| U063B | Lost communication with coolant bypass valve actuator 'A' | 3 | Network |
| U063C | Lost communication with coolant bypass valve actuator 'B' | 3 | Network |
| U063D | Lost communication with Hybrid/EV electronics coolant pump 'A' | 9 | Network |
| U063E | Lost communication with exhaust heat exchanger bypass valve actuator 'A' | 9 | Network |
| U063F | Lost communication with engine coolant flow control valve position sensor | 10 | Network |
| U0640 | Lost communication with EVAP fuel vapor temperature sensor circuit | 3 | Network |
| U0641 | Lost communication with EVAP system pressure sensor/switch circuit 'A' | 3 | Network |
| U0642 | Lost communication with EVAP system pressure sensor/switch circuit 'B' | 3 | Network |
| U0643 | Lost communication with turbocharger/supercharger 'A' temperature sensor | 4 | Network |
| U0644 | Lost communication with wastegate position sensor 'A' | 11 | Network |
| U0645 | Lost communication with active air DAM module | 9 | Network |
| U0646 | Lost communication with motor electronics coolant pump 'A' | 11 | Network |
| U0647 | Lost communication with motor electronics coolant pump 'B' | 3 | Network |
| U0648 | Lost communication with motor electronics coolant pump 'C' | 3 | Network |
| U0649 | Lost communication with coolant pump 'D' | 9 | Network |
| U064A | Lost communication with Hybrid/EV battery pack current sensor 'A' | 4 | Network |
| U064B | Lost communication with Hybrid/EV battery pack current sensor 'B' | 4 | Network |
| U064C | Lost communication with Hybrid/EV battery pack current sensor 'C' | 4 | Network |
| U064D | Lost communication with trailer brake control switch | 3 | Network |
| U064E | Lost communication with EGR cooler bypass position sensor bank 1 | 3 | Network |
| U064F | Lost communication with intake manifold runner position sensor bank 1 | 9 | Network |
| U0650 | Lost communication with exhaust pressure control valve 'A' sensor/switch | 9 | Network |
| U0651 | Lost communication with EGR sensor 'A' | 11 | Network |
| U0652 | Lost communication with EGR sensor 'B' | 4 | Network |
| U0653 | Lost communication with EGR sensor 'C' | 9 | Network |
| U0654 | Lost communication with diesel intake air flow 'A' position sensor | 9 | Network |
| U0655 | Lost communication with diesel intake air flow 'B' position sensor | 3 | Network |
| U0656 | Lost communication with turbocharger/supercharger boost control 'A' position sensor | 10 | Network |
| U0657 | Lost communication with turbocharger/supercharger bypass valve 'A' position sensor | 10 | Network |
| U0658 | Lost communication with windshield temperature sensor | 3 | Network |
| U0659 | Lost communication with left front temperature actuator | 3 | Network |
| U065A | Lost communication with right front temperature actuator | 3 | Network |
| U065B | Lost communication with left front mode actuator | 4 | Network |
Some brand data is extracted from diagnostic files and may contain manufacturer-specific wording. General SAE J2012 descriptions are used where available.