AutoCodes – Nissan – P0128 2010 Nissan Sentra

P0128 2010 Nissan Sentra Code - Thermostat Function

Quick Answer

The thermostat is a component that blocks the flow of coolant to the radiator until the engine has warmed up. Common causes include Leaking or stuck open thermostat, Low engine coolant level, Insufficient warm up time. 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: P0128 2010 Nissan Sentra indicates Thermostat Function.
Common causes: Common causes include Leaking or stuck open thermostat, Low engine coolant level, Insufficient warm up time.
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 4,639

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 Apr 21, 2019

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0128 2010 Nissan Sentra Description

The thermostat is a component that blocks the flow of coolant to the radiator until the engine has warmed up. When the engine is cold, no coolant flows through the engine. Once the engine reaches its operating temperature, the thermostat opens. The OBDII sets when the engine coolant temperature has not risen enough to open the thermostat even though the engine has run long enough. This is due to a leak in the seal or the thermostat open stuck.

OBDII Code P0128 2010 Nissan Sentra - Thermostat Function - AutoCodes.com — P0128 2010 Nissan Sentra Code - Thermostat Function

What does this mean?

What are the Possible Causes of the DTC P0128 2010 Nissan Sentra?

Leaking or stuck open thermostat
Low engine coolant level
Insufficient warm up time
Faulty engine coolant temperature sensor
Engine coolant temperature sensor harness is open or shorted
Engine coolant temperature sensor circuit poor electrical connection

How to Fix the DTC P0128 2010 Nissan Sentra?

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 does this mean?

Code Tech Notes

Check for coolant leaks first, if there are no leaks check to see if thermostat is opening and closing properly if its not replace thermostat if problem is still there coolant temperature sensor may need to be replaced.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0128 2010 Nissan Sentra 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 P0128 2010 Nissan Sentra 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 P0128 2010 Nissan Sentra Code

1. What does the OBDII code P0128 on a 2010 Nissan Sentra indicate?

The OBDII code P0128 on a 2010 Nissan Sentra typically indicates an issue with the thermostat system.

2. What are the common symptoms of a P0128 code on a 2010 Nissan Sentra?

Common symptoms of a P0128 code on a 2010 Nissan Sentra may include the engine running colder than normal, decreased fuel efficiency, and the Check Engine light illuminating.

3. What are the potential causes of a P0128 code on a 2010 Nissan Sentra?

Potential causes of a P0128 code on a 2010 Nissan Sentra include a faulty thermostat, low coolant levels, a malfunctioning coolant temperature sensor, or a stuck open thermostat.

4. How can I diagnose a P0128 code on a 2010 Nissan Sentra?

Diagnosing a P0128 code on a 2010 Nissan Sentra typically involves checking the coolant level, inspecting the thermostat for proper operation, testing the coolant temperature sensor, and ensuring there are no leaks in the cooling system.

5. What are the repair options for a P0128 code on a 2010 Nissan Sentra?

Repair options for a P0128 code on a 2010 Nissan Sentra may include replacing the thermostat, topping off coolant levels, replacing the coolant temperature sensor, and addressing any leaks in the cooling system.

6. Can a P0128 code on a 2010 Nissan Sentra cause engine damage?

While a P0128 code itself may not cause immediate engine damage, it can lead to decreased fuel efficiency and potential overheating issues if left unresolved for an extended period.

7. How important is it to address a P0128 code on a 2010 Nissan Sentra promptly?

It is important to address a P0128 code on a 2010 Nissan Sentra promptly to prevent potential engine overheating, reduced fuel efficiency, and other related issues that can impact the vehicle's performance and longevity.

8. Is it safe to continue driving with a P0128 code on a 2010 Nissan Sentra?

It is generally not recommended to continue driving with a P0128 code on a 2010 Nissan Sentra, as unresolved thermostat issues can lead to engine overheating and other more serious problems.

9. How long does it typically take to repair a P0128 code on a 2010 Nissan Sentra?

The time to repair a P0128 code on a 2010 Nissan Sentra can vary depending on the specific cause of the issue, but it may take anywhere from 1 to 3 hours for diagnosis and repair.

10. Can I reset the OBDII code P0128 on a 2010 Nissan Sentra myself?

You can reset the OBDII code P0128 on a 2010 Nissan Sentra using an OBDII scanner or by disconnecting the car's battery for a few minutes. However, it is important to address the underlying issue causing the code to prevent it from reoccurring.