P1791 – Mitsubishi DTC

Mitsubishi DTC P1791 – Engine Coolant Temperature Level Input circuit

DTC P1791 meaning on Mitsubishi

DTC P1791 for Mitsubishi refers to an issue with the Engine Coolant Temperature Level Input circuit. This diagnostic trouble code indicates that there is a problem with the signal from the engine coolant temperature sensor.

Mitsubishi DTC P1791 symptoms

Symptoms of DTC P1791 on a Mitsubishi may include:

• Check Engine Light illuminated
• Inaccurate temperature readings on the dashboard
• Engine overheating or running too cold

Mitsubishi DTC P1791 causes

Common causes of DTC P1791 on a Mitsubishi include:

• Faulty engine coolant temperature sensor
• Wiring or connector issues in the coolant temperature sensor circuit
• Engine control module (ECM) malfunction

Mitsubishi DTC P1791 seriousness

DTC P1791 should be addressed promptly as it can lead to inaccurate temperature readings, potential engine overheating, and other related issues. Ignoring this code may result in engine damage or poor performance.

How to diagnose DTC P1791 on Mitsubishi

To diagnose DTC P1791 on a Mitsubishi, you can:

1. Use an OBD-II scanner to retrieve the trouble code
2. Inspect the engine coolant temperature sensor and its wiring for any visible damage
3. Check the coolant level and system for proper operation

How to fix DTC P1791 on Mitsubishi

To fix DTC P1791 on a Mitsubishi, you may need to:

1. Replace the engine coolant temperature sensor if faulty
2. Repair any damaged wiring or connectors in the circuit
3. Reset the trouble code and monitor the system for proper operation

How to erase DTC P1791 on Mitsubishi

To erase DTC P1791 on a Mitsubishi, you can:

1. Use an OBD-II scanner to clear the trouble code
2. Ensure that the underlying issue causing the code has been resolved
3. Perform a test drive to verify that the code does not return