P1441 – OBD-II DTC

OBD-II DTC P1441 – A/C Evaporator Air Temperature Circuit Low

DTC P1441 meaning

DTC P1441 refers to a diagnostic trouble code indicating a low signal from the A/C evaporator air temperature circuit. This code is part of the On-Board Diagnostics II (OBD-II) system, which monitors various components of the vehicle’s emissions and performance. The A/C evaporator air temperature sensor measures the temperature of the air passing through the evaporator, and a low signal suggests that the sensor is not functioning correctly or that there is an issue in the circuit.

DTC P1441 symptoms

Common symptoms associated with DTC P1441 may include:

• Inconsistent or poor A/C performance
• Increased humidity inside the vehicle
• Unusual cycling of the A/C compressor
• Dashboard warning lights illuminated

DTC P1441 causes

Several factors can lead to the triggering of DTC P1441, including:

• Faulty A/C evaporator air temperature sensor
• Wiring issues, such as shorts or open circuits
• Corroded or loose electrical connections
• Faulty A/C control module
• Refrigerant leaks affecting system pressure

DTC P1441 seriousness

The seriousness of DTC P1441 can vary. While it may not pose an immediate safety risk, it can lead to:

• Reduced comfort due to ineffective A/C operation
• Potential damage to the A/C system if left unaddressed
• Increased fuel consumption due to inefficient engine operation

How to diagnose DTC P1441

To diagnose DTC P1441, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the P1441 code.
2. Inspect the A/C evaporator air temperature sensor and its wiring for damage or corrosion.
3. Check the electrical connections for tightness and cleanliness.
4. Test the A/C evaporator air temperature sensor with a multimeter to ensure it is functioning within specifications.
5. Examine the A/C control module for any faults or software issues.
6. Check for refrigerant levels and system pressure to rule out leaks.

How to fix DTC P1441 step-by-step instructions

To fix DTC P1441, follow these steps:

1. Repair or replace any damaged wiring or connectors related to the A/C evaporator air temperature sensor.
2. If the sensor is faulty, replace it with a new one.
3. Clear the DTC using an OBD-II scanner.
4. Test the A/C system to ensure proper operation and monitor for any reoccurrence of the code.
5. If the code returns, further diagnose the A/C control module and system pressure.

How to erase DTC P1441

To erase DTC P1441, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the ignition without starting the engine.
3. Navigate to the “Erase Codes” or “Clear DTCs” option on the scanner.
4. Confirm the action to clear the trouble codes.
5. Disconnect the scanner and start the vehicle to ensure the code does not return.