What does code P1791 mean on Mitsubishi vehicles?
The ECU detects a fault in the engine coolant temperature level input circuit.
OBD-II Code Mitsubishi
P1791 — Mitsubishi — Engine Coolant Temperature Level Input Circuit
The ECU detects a fault in the engine coolant temperature level input circuit.
Common symptoms
- Overheating warning indicator
Possible causes
- Sensor failure
- wiring fault
Initial recommendation
Check coolant level/temperature sensor and wiring.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
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