WIPER AND WASHER SYSTEM DIAGNOSTIC TROUBLE CODE CHART

Front Wiper and Washer System
DTC No. Detection Item DTC Detection Condition Link
B1245 Lost Communication with Wiper ECU LIN When the battery voltage is 9.5 V or more, a communication malfunction between the main body ECU (multiplex network body ECU) and front wiper motor and link assembly is detected for 10 seconds or more.

Click here

B1278 Lost Communication with Combination Switch ECU When the battery voltage is 9.5 V or more, a communication malfunction between the main body ECU (multiplex network body ECU) and windshield wiper switch assembly is detected for 10 seconds or more.

Click here

B1279 Lost Communication with Humidity/Rain Sensor LIN When the battery voltage is 9.5 V or more, a communication malfunction between the main body ECU (multiplex network body ECU) and rain sensor is detected for 10 seconds or more.

Click here

B1370 ECU Malfunction When the battery voltage is 9.5 V or more, a malfunction is detected for 10 seconds or more during the front wiper motor and link assembly self-check.

Click here

B1372 Wiper Switch Signal Mismatch between LIN and Line When the battery voltage is 9.5 V or more, the operation signals sent via LIN communication and direct line do not match for 10 seconds or more.

Click here

B1373 Lost Communication with Wiper System LIN BUS When the battery voltage is 9.5 V or more, a malfunction in the communication or LIN communication line between the main body ECU (multiplex network body ECU) and components of the wiper system occurs for 7 seconds or more 3 times consecutively.

Click here

B1400 Rain Sensor Malfunction
  • When the battery voltage is 9.5 V or more, the rain sensor temperature is abnormal for 10 seconds or more.

  • When the battery voltage is 9.5 V or more, the output of the LED built into the rain sensor is abnormal for 2 seconds or more.

Click here