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P1432 - Thermostat Heater Control (THTRC) Circuit Failure The Comprehensive component monitor (CCM) monitors the THTRC circuit to the PCM for high and low voltage. If during testing; voltage was to fall below a calibrated limit for a calibrated amount of time the test will fail and set the DTC and MIL. Open or shorted THTRC circuit
Open VPWR
Open or shorted thermostat assembly
Damaged PCM
DTC P1432 is a THTRC circuit check. Testing should include wire harness, thermostat heater and PCM.
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P1432 - Thermostat Heater Control (THTRC) Circuit Failure The Comprehensive component monitor (CCM) monitors the THTRC circuit to the PCM for high and low voltage. If during testing; voltage was to fall below a calibrated limit for a calibrated amount of time the test will fail and set the DTC and MIL. Open or shorted THTRC circuit Open VPWR Open or shorted thermostat assembly Damaged PCM DTC P1432 is a THTRC circuit check. Testing should include wire harness, thermostat heater and PCM. I know this description is a little complicated. You MAY have a blockage in the cooling sytem somewhere. To start, pull and check your thermostat (front of engine) If you replace it make sure you replace it with one that is the correct OEM temperature (like around 190 degrees). A lower temp stat will not help, it will hurt! Get the engine to cool, don't worry so much about the CEL(they call it the MIL). Something like Malfunction Illumination Light. DTC is the Diagnostic Trouble Code. The PCM is the Power Control Module (main computer). Also make sure the water pump works correctly and the radiator has no blockages.
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