P0128 Dodge Code - Thermostat Rationality
Quick Answer
Indicates that the thermostat monitor has not achieved the required engine operating temperature within a specified amount of time after starting the engine. 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 Dodge indicates Thermostat Rationality.
- 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 Dodge Description
What are the Possible Causes of the DTC P0128 Dodge?
- 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 Dodge?
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 Dodge 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 Dodge Code
1. What are the common symptoms of OBDII code P0128 in a Dodge vehicle?
The common symptoms of code P0128 in a Dodge vehicle include the engine running cooler than normal, decreased fuel efficiency, and the check engine light being illuminated.
2. What is the main cause of OBDII code P0128 in a Dodge?
The main cause of code P0128 in a Dodge is typically a malfunctioning thermostat that is stuck open or opening too soon.
3. How does a malfunctioning thermostat trigger OBDII code P0128 in a Dodge?
When the thermostat is stuck open or opening too soon, the engine is unable to reach its optimal operating temperature, triggering the code P0128 to indicate that the thermostat is not functioning correctly.
4. Can a faulty coolant temperature sensor cause OBDII code P0128 in a Dodge?
Yes, a faulty coolant temperature sensor can potentially cause code P0128 in a Dodge by providing incorrect temperature readings to the engine control module.
5. What are some repair tips for resolving OBDII code P0128 in a Dodge?
Repair tips for resolving code P0128 in a Dodge include replacing the thermostat with a high-quality part, ensuring proper coolant levels and mixture, and checking for any leaks in the cooling system.
6. Is it safe to continue driving a Dodge with OBDII code P0128?
It is not recommended to continue driving a Dodge with code P0128 for an extended period, as it can lead to potential engine damage and decreased fuel efficiency.
7. How can I reset OBDII code P0128 in a Dodge after making repairs?
After making the necessary repairs to resolve code P0128 in a Dodge, the code can be reset using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes.
8. Are there any preventive maintenance measures to avoid OBDII code P0128 in a Dodge?
To prevent OBDII code P0128 in a Dodge, regular maintenance of the cooling system, including thermostat inspection and replacement as needed, is essential.
9. Can extreme weather conditions affect the triggering of OBDII code P0128 in a Dodge?
Extreme weather conditions, such as very cold temperatures, can potentially exacerbate the issues related to a malfunctioning thermostat and lead to the triggering of code P0128 in a Dodge.
10. How long does it typically take to repair OBDII code P0128 in a Dodge?
The repair time for OBDII code P0128 in a Dodge can vary depending on the exact cause of the issue, but it generally takes around 1-2 hours for a professional mechanic to diagnose and fix the problem.
Discuss the causes and fixes for P0128 Dodge OBDII Code
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I recently replaced exuast manifold gasket and engine light came on and between 40&50 miles per hour it gets a shaking rough ride until the gas pedal is pushed down then it goes away
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