P0EC1

A/C Refrigerant Temperature Sensor B Circuit

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

The air conditioner is not working efficiently
The air conditioner turns off periodically
Increased noise from the air conditioning compressor
The malfunction indicator may light up on the dashboard

Causes

Refrigerant temperature sensor B fault
Open or short circuit in the sensor circuit
Poor connection or corroded connectors
Problems with the air conditioning control module

How to Fix

Check the integrity of the sensor circuit
Inspect connectors and contacts for corrosion
Check the resistance of the temperature sensor
If necessary, replace coolant temperature sensor B

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