General Information

Air Conditioner
B1242 Evaporator Sensor Open (High) - General Information

Componet Location





General Description

The Evaporator sensor is located on the AC/heater boxand it detects the evaporator core temperature. When the core temperature is below the threshold value, the A/C ECU interrupts the compressor relay in order to prevent evaporator freezing.

DTC Description

DTC B1242 sets if Evaporator sensor signal is at or over 4.9V for 0.3 seconds.

DTC Detecting Condition





Specification

** Resistance value of evaporator sensor as a function of temperature.






Diagnostic Circuit Diagram