AutoCodes – Acura – P2184 Acura

P2184 Acura Code - Engine Coolant Temperature Sensor 2 Circuit Low

Quick Answer

Engine Coolant Temperature (ECT) sensor 2 is a thermistor attached to the radiator. Common causes include Low coolant level, Faulty Engine Coolant Temperature Sensor, Stuck or leaking thermostat. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P2184 Acura indicates Engine Coolant Temperature Sensor 2 Circuit Low.
Common causes
Common causes include Low coolant level, Faulty Engine Coolant Temperature Sensor, Stuck or leaking thermostat.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code Popularity 3,446
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P2184 Acura Description

Engine Coolant Temperature (ECT) sensor 2 is a thermistor attached to the radiator. The Powertrain Control Module (PCM) applies voltage (about 5 V) to the ECT2 signal circuit through a pull up resistor. As the engine coolant temperature cools, ECT sensor 2 resistance increases, and the PCM detects a high signal voltage. As the engine coolant warms, the sensor resistance decreases, and the PCM detects a low ECT2 signal voltage. If the ECT sensor 2 output voltage is less than a set value when the engine coolant temperature is high, the PCM detects a malfunction and a DTC is stored.
OBDII Code P2184 Acura - Engine Coolant Temperature Sensor 2 Circuit Low - AutoCodes.com
P2184 Acura Code - Engine Coolant Temperature Sensor 2 Circuit Low

What are the Possible Causes of the DTC P2184 Acura?

  • Low coolant level
  • Faulty Engine Coolant Temperature Sensor
  • Stuck or leaking thermostat
  • Engine Coolant Temperature Sensor harness is open or shorted
  • Engine Coolant Temperature Sensor circuit poor electrical connection

How to Fix the DTC P2184 Acura?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2184 Acura code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P2184 Acura code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2184 Acura Code

1. What does OBDII code P2184 mean on an Acura?

Code P2184 indicates that the Engine Control Module (ECM) has detected a low voltage signal from Engine Coolant Temperature Sensor 2, which monitors coolant temperature.

2. What are the symptoms of code P2184 in an Acura?

Common symptoms include the Check Engine Light turning on, inaccurate temperature readings, poor fuel economy, and potential engine overheating.

3. What causes the P2184 code on an Acura?

Possible causes include a faulty Engine Coolant Temperature Sensor 2, damaged wiring or connectors, low coolant levels, or a malfunctioning ECM.

4. Can I drive my Acura with a P2184 code?

While the vehicle may still run, driving with this code is not recommended as it can lead to overheating or other engine performance issues.

5. How do I diagnose the P2184 code on my Acura?

Start by inspecting the coolant levels, sensor wiring, and connectors for damage. Use a scan tool to monitor live data and compare readings from the coolant temperature sensors.

6. How do I fix the P2184 code on an Acura?

Repairs may include replacing the faulty Engine Coolant Temperature Sensor 2, repairing damaged wiring, cleaning corroded connectors, or refilling low coolant.

7. Where is Engine Coolant Temperature Sensor 2 located on my Acura?

Sensor 2 is typically located near the radiator or lower section of the engine block, depending on the model.

8. How much does it cost to repair a P2184 code on an Acura?

The repair cost varies but typically ranges from $100 to $300, depending on whether the sensor, wiring, or other components need replacement.

9. Can low coolant cause a P2184 code on an Acura?

Yes, low coolant levels can cause inaccurate readings from the temperature sensor and trigger the P2184 code.

10. Will clearing the P2184 code solve the problem on my Acura?

Clearing the code may temporarily turn off the Check Engine Light, but the issue will persist unless the underlying problem is resolved.

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