Troubleshooting DTC of AC (anniversary version) Use a special scan tool to perform troubleshooting. For details, see the diagnostic introductions given by the scan tool. DTC of telematics unit (TU) 4.3-5 Trouble code Hexadecimal DTC Description Fault causes Recommended countermeasures B1614 15 Ambient temperature sensor short to the power supply or open 1. ECU circuit failed 2. Sensor not connected 3. Low sensor temperature Inspect the circuit or replace the sensor. B1614 11 Ambient temperature sensor short to ground ECU circuit failed Check circuit or replace sensor B1604 15 Evaporator temperature sensor short to the power supply or open 1. ECU circuit fault 2. Sensor not connected. 3.
Low sensor temperature. Check circuit or replace sensor B1605 11 Evaporator temperature sensor open ECU circuit fault Check circuit or replace sensor U3003 17 Power voltage above limit 1. Incorrect ECU collection 2. Abnormal battery voltage Check the circuit or replace the ECU. U3003 16 Power voltage below limit 1. Incorrect ECU acquisition. 2. The supply voltage is abnormal. Check circuit replace ECU B1623 23 Recirculation/fresh motor open Circuit failed Inspect the A/C circuit.
B1623 24 Recirculation/fresh motor short Line fault Inspect A/C lines Trouble code Hexadecimal DTC Description Fault causes Recommended countermeasures B2300 A300 Built-in battery failed Battery damaged or fall-off Disassemble the motor and remove the battery. B2301 A301 4G network failure to be enabled High temperature environment — B2300 A300 High built-in battery temperature alarm High temperature environment — B2302 A302 WIFI failure to be initialized High temperature environment — B2302 A302 WIFI connection failure WIFI module damaged Disassemble the telematics unit and replace the WIFI module.
B2303 A303 GPS failure to be initialized High temperature environment — B2304 A304 Failure to enter Standby mode High temperature environment — B2305 A305 Failure to get GPS data GPS module failed Replace the GPS module. B2306 A306 Failure to read from SPI flash or write data Flash chip failed Replace the flash. B2307 A307 SPI flash failure to be initialized Line fault Check if the MCU and FLASH circuits are normal. U0073 C073 CAN bus off Number of sent errors on CAN control unit is 255 or greater. Check the wire harness and connector and other control units. B2308 A308 CPU uart communication Line fault Check if the MCU and CPU uart are normally connected.