Engine Coolant Temperature (ECT) Circuit High Input
¿Qué significa esto?
Code P0118 indicates the ECT sensor voltage is higher than expected, suggesting the sensor reports excessively low temperature.
Aviso legal: Este código de diagnóstico forma parte del sistema OBD2 estándar y puede aplicarse a los modelos Volkswagen Touareg fabricados de 1996 a 2026. Sin embargo, tenga en cuenta que la presencia de este código específico depende de la configuración del motor de su vehículo, las opciones y el año de producción.
Causas comunes
Sensor de temperatura del refrigerante (ECT) defectuoso
Arnés de cableado dañado o roto
Conector eléctrico corroído o suelto
Síntomas a tener en cuenta
- La luz de Check Engine está encendida
- Disminución del rendimiento de combustible
- Dificultad para arrancar el motor
- El motor se apaga cuando está frío
Cómo Diagnosticar
Soluciones Comunes
Replace the Engine Coolant Temperature (ECT) Sensor: This is by far the most frequent solution for P0118. If the sensor's internal resistance is out of specification or shows an open circuit, replacing it with a high-quality OEM or equivalent aftermarket part will resolve the issue.
Repair or Replace Damaged Wiring and/or Connector: If the visual inspection or electrical tests reveal corroded, frayed, or broken wires, or a damaged electrical connector at the ECT sensor, the affected section of the harness or the connector itself must be repaired or replaced. Use proper soldering and heat-shrink techniques for durable repairs.
Repair an Open Circuit in the Signal Wire to the PCM: If diagnostic steps confirm an open circuit in the signal wire between the ECT sensor connector and the PCM, the break must be located and properly repaired. This often involves tracing the harness carefully, as damage can be hidden.