Toyota Corolla Cross: Id Code Box

 Catalyst System Efficiency Below Threshold Bank 1 (P042000)

MONITOR DESCRIPTION The ECM uses air fuel ratio sensors mounted in front of and behind the Three-Way Catalytic Converter (TWC) to monitor its efficiency. The first sensor, the air fuel ratio sensor (sensor 1), sends pre-catalyst information to the ECM. The second sensor, the air fuel ratio sensor

 Hybrid/EV Battery Voltage High (P31B300)

DTC SUMMARY MALFUNCTION DESCRIPTION The hybrid vehicle control ECU uses the inverter voltage to monitor the HV battery voltage and detect malfunctions. The cause of this malfunction may be the following: Inverter with converter assembly malfunction (Boost converter system) VL sensor malfun