P2185 Fault Code

Engine Coolant Temperature Sensor 2 Circuit High

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2185 fault code indicates a high circuit voltage reading from the Engine Coolant Temperature (ECT) Sensor 2. This sensor is critical for monitoring the temperature of the engine coolant, ensuring optimal engine performance and preventing overheating. When the voltage signal from this sensor exceeds the specified range, it triggers the check engine light and may affect engine management decisions.

What are the symptoms of the P2185 code?

Drivers may notice the following symptoms:

• Check engine light illuminated on the dashboard.
• Overheating engine if the ECU is not receiving accurate temperature data.
• Poor engine performance or increased fuel consumption due to erroneous temperature readings.
• Fluctuations in temperature gauge readings.

What causes the P2185 code?

Common causes for the P2185 fault code include:

• Faulty ECT Sensor 2, which may be providing inaccurate readings.
• Damaged wiring or connectors leading to short circuits or poor connections.
• Issues with the Engine Control Unit (ECU) misinterpreting data.
• Coolant leaks affecting sensor accuracy, or abnormal coolant levels.

How to fix P2185?

To resolve the P2185 fault code, consider the following steps:

• Inspect and repair any damaged wiring or connectors related to the ECT Sensor 2.
• Replace the faulty ECT Sensor 2 to restore proper temperature readings.
• Verify that the coolant level is adequate and that there are no leaks in the system.
• Clear the fault code and perform a test drive to ensure that the issue has been resolved.