P0128 2002 Nissan Altima Sedan 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 2002 Nissan Altima Sedan 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.
Code P0128 2002 Nissan Altima Sedan Description
What are the Possible Causes of the DTC P0128 2002 Nissan Altima Sedan?
- 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 2002 Nissan Altima Sedan?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0128 2002 Nissan Altima Sedan 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.
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Frequently Asked Questions about P0128 2002 Nissan Altima Sedan Code
1. What does OBDII code P0128 on a 2002 Nissan Altima Sedan indicate?
The OBDII code P0128 on a 2002 Nissan Altima Sedan indicates an issue with the thermostat function.
2. What are the common symptoms of a P0128 code on a 2002 Nissan Altima?
Common symptoms of a P0128 code on a 2002 Nissan Altima include engine overheating, a decrease in fuel efficiency, and the temperature gauge reading lower or higher than normal.
3. What are the possible causes of a P0128 code on a 2002 Nissan Altima Sedan?
Possible causes of a P0128 code on a 2002 Nissan Altima include a faulty thermostat, low coolant level, a malfunctioning coolant temperature sensor, or a stuck open thermostat.
4. How can I diagnose the cause of a P0128 code on my 2002 Nissan Altima Sedan?
To diagnose the cause of a P0128 code, you can start by 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. Can I continue driving my 2002 Nissan Altima with a P0128 code?
It is not recommended to continue driving your 2002 Nissan Altima with a P0128 code as it can lead to potential engine damage due to overheating.
6. How can I repair a P0128 code on my 2002 Nissan Altima Sedan?
To repair a P0128 code on a 2002 Nissan Altima, you may need to replace the thermostat, refill the coolant, reset the trouble code with an OBDII scanner, and monitor the temperature gauge for normal operation.
7. Are there any preventive maintenance tips to avoid a P0128 code on my 2002 Nissan Altima Sedan?
To prevent a P0128 code on your 2002 Nissan Altima, it is recommended to regularly check the coolant level, replace the thermostat at the manufacturer's recommended intervals, and have the cooling system inspected during routine maintenance.
8. Can a DIY enthusiast fix a P0128 code on a 2002 Nissan Altima Sedan?
A DIY enthusiast with mechanical skills and the necessary tools can potentially fix a P0128 code on a 2002 Nissan Altima by following repair guides or consulting with automotive forums for assistance.
9. Is it important to address a P0128 code promptly on a 2002 Nissan Altima Sedan?
Yes, it is important to address a P0128 code promptly on a 2002 Nissan Altima to prevent potential engine damage and ensure the vehicle operates safely and efficiently.
10. How much does it typically cost to repair a P0128 code on a 2002 Nissan Altima Sedan?
The cost to repair a P0128 code on a 2002 Nissan Altima can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.
Discuss the causes and fixes for P0128 2002 Nissan Altima Sedan OBDII Code
-
My radiator was leaking! I fix that. The code came back on (p0128). Then I fix the thermostat. The code came on again! My heater is blowing hot air. What next? Do I need to change any sensors?
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Try bleeding the cooling system one more time, just to make sure there is no air in the system. If you are sure there is no air in the system, then you have to replace the Coolant Temperature Sensor.
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