DTC P0EC1-15: Refrigerant Outlet Sensor Circuit Short to Battery or Open [08/2023 - ]: Description
The refrigerant outlet sensor (No. 1 air conditioning thermistor assembly) is installed on the No. 1 discharge tube to detect the refrigerant gas temperature from the compressor and is used to control the air conditioning system. The resistance of the refrigerant outlet sensor (No. 1 air conditioning thermistor assembly) changes in accordance with the refrigerant gas temperature from the compressor. Resistance increases as the refrigerant gas temperature drops and decreases as the temperature rises. The heat pump ECU assembly outputs a voltage to the refrigerant outlet sensor (No. 1 air conditioning thermistor assembly) and reads voltage changes that result from the changes in the resistance of the refrigerant outlet sensor (No. 1 air conditioning thermistor assembly).
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|---|
| P0EC1-15 | Refrigerant Outlet Sensor Circuit Short to Battery or Open | Diagnosis Condition:
Malfunction Status:
Detection Time:
|
|
Does not come on | Memorized | Air Conditioner | A | - |
| Vehicle Condition | |||
|---|---|---|---|
| Pattern 1 | Pattern 2 | ||
| Diagnosis Condition | Ignition switch ON | ◦ | ◦ |
| Malfunction | Open in refrigerant outlet sensor (No. 1 air conditioning thermistor assembly) circuit | ◦ | - |
| Short to +B in refrigerant outlet sensor (No. 1 air conditioning thermistor assembly) circuit | - | ◦ | |
| Detection Time | Continuously for 4 seconds or more | Continuously for 4 seconds or more | |
| Trip Count | 1 trip | 1 trip | |
HINT:
If the conditions of either of these patterns are detected, a DTC will be stored