Lexus NX: Cruise Control

 Invalid Data Received from HVAC Control Module (U0424-537)

DESCRIPTION If there is a malfunction in the air conditioning amplifier assembly, DTC U0424-537 will be stored. DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate U0424-537 Invalid Data Received from HVAC Control Module Air conditioning amplifier as

 High Voltage System Inter-Lock Circuit High (P0A0D-350,P0A0D-351)

DTC SUMMARY MALFUNCTION DESCRIPTION The hybrid vehicle control ECU detects that a safety device (interlock) is operated or that there is an open circuit in the detection circuit. (Even if an open circuit occurs while the vehicle is stopped, the system determines that the safety device was operated.)