Diagnostic Trouble Code Chart

WARNING: This page is about a different car, the 2006 Lexus RX 400h. However, it is still accessible from the selected car via links, so may be relevant.

DIAGNOSTIC TROUBLE CODE CHART

DTC No.	Detection Item	Trouble Area
P0500	Vehicle Speed Sensor Malfunction	Vehicle speed sensor signal circuit Combination meter Hybrid vehicle control ECU
P0571	Brake Switch "A" Circuit	Stop light switch assembly Stop light switch signal assembly circuit Hybrid vehicle control ECU
P0571	Stop Light Switch Circuit Malfunction	BRK relay BRK relay circuit Skid control ECU Communication circuit Cruise control ECU (Distance control ECU) Hybrid vehicle control ECU
P0607	Control Module Performance	Hybrid vehicle control ECU (This DTC indicates a malfunction in the hybrid vehicle control ECU. When this DTC is output, it is necessary to replace hybrid vehicle control ECU.)
P1570	Radar Sensor Malfunction	Laser sensor
P1572	Improper Aiming of Radar Sensor Beam Axis	Laser sensor
P1575	Warning Buzzer Malfunction	Skid control buzzer assembly Skid control buzzer circuit Skid control ECU
P1578	Brake System Malfunction	VSC system
P1615	Communication Error from Distance Control ECU to ECM	Communication circuit Cruise control ECU (Distance control ECU) Hybrid vehicle control ECU
P1616	Communication Error from ECM to Distance Control ECU	Communication circuit Cruise control ECU (Distance control ECU) Hybrid vehicle control ECU
U0100	Lost Communication with ECM/PCM "A"	Communication circuit Cruise control ECU (Distance control ECU) Hybrid vehicle control ECU
U0100	Communication Stop from ECM to Distance Control ECU, VSC	Communication circuit Skid control ECU Hybrid vehicle control ECU
U0122	Lost Communication with Vehicle Dynamics Control Module	Communication circuit Skid control ECU Hybrid vehicle control ECU
U0235	Lost Communication With Cruise Control Front Distance Range Sensor	Communication circuit Laser sensor Cruise control ECU (Distance control ECU)