P1144 – OBD-II DTC

OBD-II DTC P1144 – Water In Fuel Indicator Circuit Malfunction

DTC P1144 meaning

DTC P1144 refers to a malfunction in the Water In Fuel Indicator Circuit. This code indicates that the vehicle’s onboard diagnostic system has detected an issue with the sensor or circuit that monitors the presence of water in the fuel system. The water in fuel sensor is crucial for preventing engine damage and ensuring optimal performance, as water can cause fuel system corrosion and poor combustion.

DTC P1144 symptoms

Common symptoms associated with DTC P1144 may include:

• Illuminated check engine light
• Rough engine performance
• Decreased fuel efficiency
• Difficulty starting the engine
• Engine stalling or misfiring

DTC P1144 causes

Several factors can lead to the triggering of DTC P1144, including:

• Faulty water in fuel sensor
• Damaged wiring or connectors in the sensor circuit
• Corrosion or contamination in the fuel system
• Faulty engine control module (ECM)
• Improper fuel quality containing excessive water

DTC P1144 seriousness

DTC P1144 is considered a moderate to serious issue. While it may not cause immediate engine failure, ignoring this code can lead to significant engine problems over time, including:

• Fuel system damage
• Increased emissions
• Potential engine stalling
• Long-term performance degradation

How to diagnose DTC P1144

To diagnose DTC P1144, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the P1144 code.
2. Inspect the water in fuel sensor and its wiring for any visible damage or corrosion.
3. Check the fuel quality for excessive water contamination.
4. Test the water in fuel sensor using a multimeter to ensure it is functioning correctly.
5. Examine the engine control module (ECM) for any faults or updates.

How to fix DTC P1144 step-by-step instructions

To fix DTC P1144, follow these steps:

1. Clear the DTC using an OBD-II scanner.
2. If the code returns, inspect and replace the water in fuel sensor if faulty.
3. Repair or replace any damaged wiring or connectors in the sensor circuit.
4. Drain any water from the fuel system and replace with clean fuel.
5. Reset the ECM if necessary and perform a test drive to ensure the issue is resolved.

How to erase DTC P1144

To erase DTC P1144, 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 codes.
5. Disconnect the scanner and start the engine to verify that the check engine light is off.

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