Lexus IS250 IS220d GSE20 ALE20 - CRUISE CONTROL
DYNAMIC RADAR CRUISE CONTROL SYSTEM - DIAGNOSTIC TROUBLE CODE CHART
If a trouble code is displayed during the DTC check, check the trouble areas listed for that code in the table below and proceed to the appropriate page.
| DTC No. | Detection Item | Trouble Area | See page |
| P0500 | Vehicle Speed Sensor Malfunction | -Vehicle speed sensor -Vehicle speed sensor signal circuit -ECM | |
| P0503 | Vehicle Speed Sensor "A" Intermittent / Erratic / High | -Vehicle speed sensor -Vehicle speed sensor signal circuit -ECM | |
| P0571 | Brake Switch "A" Circuit | -Stop light switch -Stop light switch circuit -ECM | |
| P0607 | Control Module Performance | -ECM (This DTC indicates malfunction in ECM. When this DTC is output, it is necessary to replace ECM) | |
| P1570 | Radar Sensor Malfunction | -Millimeter wave radar sensor | |
| P1572 | Improper Aiming of Radar Sensor Beam Axis | -Millimeter wave radar sensor | |
| P1575 | Warning Buzzer Malfunction | -Skid control buzzer -Skid control buzzer circuit -ABS & traction actuator (Skid control ECU) | |
| P1578 | Brake System Malfunction | -VSC system -ECM | |
| P1615 | Communication Error from Distance Control ECU to ECM | -Communication circuit -Distance control ECU (Cruise control ECU) -ECM | |
| P1616 | Communication Error from ECM to Distance Control ECU | -Communication circuit -Distance control ECU (Cruise control ECU) | |
| P1617 | Distance Control ECU Malfunction | -Distance control ECU (Cruise control ECU) | |
| P1630 | Communication Error from VSC to ECM | -Communication circuit -ABS & traction actuator (Skid control ECU) -ECM | |
| P1631 | Communication Error from ECM to VSC | -Communication circuit -ECM -ABS & traction actuator (Skid control ECU) | |
| U0100 | Lost Communication with ECM/PCM "A" | -Communication circuit -ECM -Distance control ECU (Cruise control ECU) | |
| U0100 | Lost Communication with ECM/PCM "A" | -Communication circuit -ECM -ABS & traction actuator (Skid control ECU) | |
| U0122 | Lost Communication with Vehicle Dynamics Control Module | -Communication circuit -ABS & traction actuator (Skid control ECU) -ECM | |
| U0123 | Communication Error of Yaw Rate Sensor | -Communication circuit -Yaw rate sensor -Distance control ECU (Cruise control ECU) -ECM | |
| U0126 | Lost Communication with Steering Angle Sensor Module | -Communication circuit -Steering angle sensor -Distance control ECU (Cruise control ECU) -ECM | |
| U0235 | Lost Communication with Cruise Control Front Distance Range Sensor | -Communication circuit -Millimeter wave radar sensor -Distance control ECU (Cruise control ECU) | |
| U1101 | Lost Communication with Distance Control ECU | -Communication circuit -Distance control ECU (Cruise control ECU) -ECM | |
| U1102 | Lost Communication with Radar Sensor | -Communication circuit -Millimeter wave radar sensor -Distance control ECU (Cruise control ECU) |