General Information

B1242 Evaporator Sensor Open (High)

General Information

Component Location





General Description

The Evaporator sensor is located on the AC/heater box and 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

The Air conditioner Control Module sets DTC B1242 if Evaporator sensor has been detected over 4.9 V for 4 sec.

DTC Detecting Condition





Specification

** Resistance value of incar temp sensor as a function of temperature.






Diagnostic Circuit Diagram