P0598 code — how to fix error fast
The P0598 code isn't just numbers; it's a sign. Find out what it means for your vehicle's maintenance.
It’s important to understand the meaning of OBD2 codes that may emerge in your vehicle, especially if they are like code P0598. While this code doesn’t affect the engine directly, it can trigger a series of events that would disrupt the engine’s temperature regulation and lead to overheating and stalling.
To help you get a better understanding of the code and tackle it as soon as possible, our team decided to give you a complete guide on P0598 code meaning. In this post, we’ll share some of our team’s professional insight on the code’s main causes, the consequences it comes with, and ways of removing and fixing it.
Why you can trust REREV’s OBD2 code advice: Our automotive expert researchers with experienced mechanics undertakes a thorough research methodology to deliver precise insights on OBD codes. Find out more about OBD2 codes research process..
What does the P0598 code mean?
The P0598 code stands for “Thermostat Heater Control Circuit Low.” This means that there is a problem with the thermostat heater control circuit, which controls the temperature of the engine. When this circuit is not working properly, it can cause the engine to run too hot or too cold, which can lead to serious damage.
Some of the most common symptoms of this code include the check engine light being on, as well as lower engine performance and increased fuel consumption. Plus, you may even experience overheating and the engine staying hot for too long which can be devastating for the mechanical components in it.
What causes the P0598 code?
While this code may be triggered in a car for a variety of reasons, it’s easier to diagnose it due to all of these reasons being relatively connected to one another. Of course, problems with the thermostat can most likely lead to issues with this code, but that’s not always the case, so let’s take a look:
Faulty thermostat
The thermostat is responsible for regulating the engine’s temperature. If it is not working properly, it can cause the engine to run too hot or too cold. This can trigger the P0598 code.
Wiring issues
If there is a problem with the wiring that connects the thermostat to the PCM (Powertrain Control Module), it can cause the code to appear.
Failed PCM
In some cases, a failed PCM can cause the P0598 code to appear. This is a rare occurrence, but it’s worth considering if all other potential causes have been ruled out.
Which car models does the P0598 code affect the most?
The P0598 code can affect any vehicle with a thermostat heater control circuit, but some models are more prone to this issue than others. Here are a few car models that are most likely to be affected by the code:
- Chevy Impala: The 2014-2016 Chevrolet Impala is known to have issues with P0598 due to faulty thermostat housing.
- GMC Terrain: The 2010-2017 GMC Terrain may also experience problems with P0598 due to a malfunctioning thermostat.
- Chevy Cruze: The 2011-2016 Chevrolet Cruze may be affected due to a malfunctioning thermostat housing.
How to diagnose the P0598 code
Now that you know a bit more on what might have caused the code in your vehicle, it’s time to use that information to your advantage and figure out a solution. But first, let’s see what you can do to precisely determine the root cause of the code in your car:
Check the thermostat
The first step is to check the thermostat to see if it’s working properly. You can do this by using a multimeter to test the resistance of the thermostat. If the resistance is outside of the manufacturer’s recommended range, the thermostat may be faulty.
Check the wiring
If the thermostat is working properly, the next step is to check the wiring. You can do this by using a multimeter to test the continuity of the wiring. If there is a break in the wiring, it will need to be repaired or replaced.
Check the PCM
If the wiring is working properly, the final step is to check the PCM. This can be done using a scan tool to check for any error codes related to the PCM. If the PCM is faulty, it will need to be replaced.
How to fix the P0598 code
Once you have diagnosed the issue, it’s time to fix it. Here are a few potential fixes for each cause of the P0598 code:
Repair or replace a faulty thermostat
If the thermostat is faulty, it will need to be replaced. The cost of a new thermostat can range from $50 to $200, depending on the make and model of your vehicle.
Repair wiring issues
This one is among the most common causes of this code and you’ll most likely be looking at $100 to $150 worth of repairs if wiring issues have led to the code’s activation.
Failed PCM
If the PCM is faulty, it will need to be replaced. The cost of a new PCM can range from $500 to $1,000, depending on the make and model of your vehicle.
How to prevent the P0598 code
As you can see, the code P0598 can cause quite some damage in your vehicle and that’s why it’s important to take the necessary steps to prevent it once you’ve taken care of it. Here’s what you may be able to do to reduce the likelihood of the code emerging again:
- Follow your vehicle’s recommended maintenance schedule
- Use high-quality coolant
- Check the thermostat regularly for signs of wear or damage
- Check the wiring regularly for signs of damage or corrosion
By following these tips, you can reduce the risk of the P0598 code appearing in your vehicle.
Our take
The P0598 code can be a serious issue for any vehicle. By understanding the code, its causes, and how to diagnose and fix the problem, you can keep your vehicle running smoothly for years to come.
We hope that you’ll be able to use our guide exactly for that, and that we’ve made dealing with the problem at least a bit easier for you with this guide.d
What causes P0598 code?
There are several potential causes of P0598, including a malfunctioning thermostat, faulty thermostat housing, damaged wiring or electrical connections, or a failed engine control module (ECM).
What are the symptoms of P0598 code?
The most common symptom of P0598 is an engine that takes longer than usual to warm up. You may also notice reduced fuel efficiency, decreased engine performance, or an illuminated check engine light.
How is P0598 code diagnosed?
To diagnose P0598, a professional mechanic will use an OBD-II scanner to read the code and then perform a visual inspection of the thermostat and its associated components. They may also test the thermostat’s electrical connections and perform a resistance test on the heater circuit.
