P0126

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2017-10-10

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Description:

• The fault code P0126 indicates that the engine coolant temperature is below the thermostat regulating temperature. This may cause the engine to run poorly or not at all.

Possible Symptoms:

• Illuminated check engine light

• Poor engine performance

• Decreased fuel efficiency

• Overheating engine

Possible Causes:

• Faulty thermostat

• Low coolant level

• Malfunctioning engine coolant temperature sensor

• Faulty engine control module (ECM)

Related Parts:

• Engine Coolant Temperature Sensor: The coolant temperature sensor measures the temperature of the engine coolant. Problems lead to engine overheating

Possible Solutions:

• Replace the faulty thermostat

• Check and refill the coolant level

• Replace the malfunctioning engine coolant temperature sensor

• Replace the engine control module (ECM) if necessary