DSD Information System
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DTC B14B8: Refrigerant Shortage [12/2019 - 10/2022]: Description

This DTC is stored if the amount of refrigerant in the air conditioning system is insufficient.

The air conditioning amplifier assembly receives the ambient temperature signal, refrigerant pressure signal, etc. from various sensors.

Based on these signals, the air conditioning amplifier assembly detects the amount of refrigerant.

The A/C switch indicator is turned off and the air conditioning system is stopped if the amount of refrigerant is insufficient.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory
B14B8 Refrigerant Shortage The following condition is detected in the normal operation refrigerant shortage check:
Amount of refrigerant is insufficient
  • Refrigerant pipe line (leak or obstruction)
  • Cooler expansion valve
  • Air conditioning amplifier assembly
  • Harness or connector
  • Air conditioner pressure sensor
 Memorized
(10 min. or more)*

*: The air conditioning amplifier assembly stores this DTC if the malfunction has occurred for the period of time indicated in the brackets.

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