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TuningBot DTC Database · v4.37.15

P1543 Mitsubishi - Radiator outlet engine temperature (ECT) - low input

Manufacturer-specific interpretation for Mitsubishi. All interpretations of P1543

P · PowertrainThermal_managementOBD2

What P1543 means

P1543
Radiator outlet engine temperature (ECT) - low input Mitsubishi · thermal_management Data confidence 62%

The control module detected that the Radiator outlet engine temperature (ECT) signal stayed below the expected range. This is the manufacturer-specific definition used by Mitsubishi.

Possible causes

  • Wiring
  • engine coolant radiator
  • coolant thermostat
  • engine coolant pump
  • ECT sensor
  • ECM

Related and nearby codes

How to read P1543

P

Powertrain: engine, transmission and driveline systems.

1

Manufacturer-defined range: the meaning can differ between brands.

543

Specific fault index within the subsystem.

Frequently asked questions about P1543

What does P1543 mean?

Radiator outlet engine temperature (ECT) - low input. The control module detected that the Radiator outlet engine temperature (ECT) signal stayed below the expected range. This is the manufacturer-specific definition used by Mitsubishi.

Is P1543 generic or manufacturer-specific?

P1543 is a manufacturer-specific code. In this database it is documented for: Mitsubishi. The same number can mean something different on other brands.

Can TuningBot remove P1543 at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.

Other file services

ECU tuningStage 1 dyno results for Mitsubishi engines See the results →

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