AutoCodes – Honda – P2185 2010 Honda Accord

P2185 2010 Honda Accord Code - Engine Coolant Temperature Sensor 2 Circuit High Voltage

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: P2185 2010 Honda Accord indicates Engine Coolant Temperature Sensor 2 Circuit High Voltage.
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 12,474

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2185 2010 Honda Accord 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 P2185 2010 Honda Accord - Engine Coolant Temperature Sensor 2 Circuit High Voltage - AutoCodes.com — P2185 2010 Honda Accord Code - Engine Coolant Temperature Sensor 2 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2185 2010 Honda Accord?

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 P2185 2010 Honda Accord?

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 P2185 2010 Honda Accord 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 P2185 2010 Honda Accord 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 P2185 2010 Honda Accord Code

1. What are the common symptoms of OBDII code P2185 in a 2010 Honda Accord?

The common symptoms of code P2185 include the check engine light illuminating on the dashboard, engine overheating, poor fuel efficiency, and potentially rough idling.

2. What does the OBDII code P2185 in a 2010 Honda Accord indicate?

Code P2185 indicates a high voltage condition in the circuit of Engine Coolant Temperature Sensor 2 in the Honda Accord's engine coolant system.

3. What are the possible causes of OBDII code P2185 in a 2010 Honda Accord?

Possible causes of code P2185 in a 2010 Honda Accord include a faulty Engine Coolant Temperature Sensor 2, a damaged sensor wiring harness, a malfunctioning cooling system, or issues with the engine control module.

4. How can I diagnose the OBDII code P2185 in my 2010 Honda Accord?

Diagnosing code P2185 involves using an OBDII scanner to retrieve the code, inspecting the Engine Coolant Temperature Sensor 2 and its wiring, checking the coolant levels, and testing the sensor's resistance and voltage.

5. Can I continue to drive my 2010 Honda Accord with OBDII code P2185?

It is not recommended to drive your Honda Accord with code P2185 as it may lead to engine overheating, potential damage, and reduced performance. It's best to address the issue promptly.

6. How can I repair OBDII code P2185 in my 2010 Honda Accord?

To repair code P2185, you may need to replace the Engine Coolant Temperature Sensor 2, repair or replace damaged wiring, ensure proper coolant levels and system function, and reset the fault code using an OBDII scanner.

7. Will resetting the OBDII code P2185 in my 2010 Honda Accord make the issue go away?

Resetting the code may temporarily turn off the check engine light, but if the underlying issue causing code P2185 is not addressed, the problem will likely reoccur. It's essential to diagnose and repair the root cause.

8. How much does it typically cost to fix OBDII code P2185 in a 2010 Honda Accord?

The cost of fixing code P2185 can vary depending on the exact cause of the issue. Repairs may range from $100 to $300, including sensor replacement, wiring repairs, or system diagnostics.

9. Is OBDII code P2185 a common problem in 2010 Honda Accords?

While not extremely common, OBDII code P2185 can occur in 2010 Honda Accords due to sensor failures, wiring issues, or cooling system problems. Prompt diagnosis and repair can prevent further complications.

10. Can a DIY enthusiast fix OBDII code P2185 in a 2010 Honda Accord?

Depending on your skill level and access to tools, DIY enthusiasts may be able to address code P2185 by replacing the Engine Coolant Temperature Sensor 2 and checking for wiring issues. However, professional diagnosis is recommended if you're unsure.