P0599

2017-10-10

Description:

  • The fault code P0599 indicates that there is an issue with the thermostat heater control circuit, which is registering a high voltage. This can lead to a number of engine related problems and may cause the check engine light to illuminate.

Possible Symptoms:

  • Illuminated check engine light

  • Poor engine performance

  • Increased fuel consumption

  • Difficulty starting the engine

Possible Causes:

  • Failed thermostat heater control circuit

  • Short circuit in the thermostat heater circuit

  • Faulty wiring or connections in the circuit

  • Failed engine control module (ECM)

Related Parts:

  • Thermostat Heater: A thermostat keeps the engine at its proper temperature. __A bad thermostat leads to poor fuel economy

Possible Solutions:

  • Replace the thermostat heater control circuit

  • Check and repair any damaged wiring or connections

  • Replace the engine control module (ECM) if necessary

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