P2184 Fault Code

Engine Coolant Temperature Sensor 2 Circuit Low

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

The P2184 fault code indicates that the Engine Coolant Temperature Sensor 2 (ECTS2) is reporting a low voltage or reading to the Engine Control Module (ECM). This sensor provides critical data about the engine's operating temperature, influencing fuel management and emissions control. A fault in this circuit can lead to engine performance issues and may trigger the check engine light.

What are the symptoms of the P2184 code?

Symptoms you may experience with the P2184 code include:

• Check Engine Light activated
• Poor engine performance or stalling
• Increased fuel consumption
• Overheating or underheating of the engine
• Erratic temperature gauge readings on the dashboard

What causes the P2184 code?

Common causes for the P2184 fault code include:

• Faulty Engine Coolant Temperature Sensor 2
• Damaged wiring or connectors in the sensor circuit
• Poor electrical connection or corrosion
• Issues with the Engine Control Module (ECM)
• Low coolant levels affecting sensor readings

How to fix P2184?

To resolve the P2184 fault code, consider the following steps:

• Inspect and repair the wiring and connectors related to the Engine Coolant Temperature Sensor 2.
• Test the sensor with a multimeter to check for correct resistance values and replace it if necessary.
• Check the coolant levels and top up if they are low.
• Clear the fault codes and conduct a test drive to verify that the issue is resolved.