The P0599 code on a Chevrolet Cruze refers to an issue with the thermostat heater control circuit. This code is specifically related to the thermostat heater control circuit “A” and indicates that there is a malfunction or open circuit detected within the circuit.
P0599 code on a Chevrolet Cruze
The thermostat heater is an electrically controlled heating element that helps regulate the temperature of the engine coolant. The engine control module (ECM) uses this circuit to control the operation of the thermostat and ensure that the engine runs at the proper temperature.
When the ECM detects an issue with the thermostat heater control circuit, it will illuminate the check engine light and store the P0599 code in its memory. Some common symptoms associated with this code may include poor engine performance, reduced fuel efficiency, or a lack of heat from the vehicle’s climate control system.
To diagnose and repair the issue, a technician will typically perform a visual inspection of the wiring and connections in the thermostat heater control circuit. They may also use a multimeter to test the electrical continuity of the circuit and check for any open or short circuits.
If a fault is identified, the technician will typically replace any damaged components and clear the code from the ECM’s memory. Once repaired, the vehicle should be road-tested to ensure that the issue has been resolved and the check engine light is no longer illuminated.
P0599 code on a Chevrolet Cruze possible causes
Table: P0599 code on a Chevrolet Cruze possible causes and comments for them
| Possible Causes | Comments |
|---|---|
| Faulty Thermostat Heater Control Circuit | A common cause of the P0599 code is a malfunction or open circuit in the thermostat heater control circuit. This can be caused by wiring issues, a faulty thermostat, or a defective ECM. |
| Poor Electrical Connection | Poor connections within the thermostat heater control circuit can also cause the P0599 code. This can be due to corroded or damaged connectors, damaged wiring, or loose connections. |
| Failed Thermostat | A failed thermostat can also cause the P0599 code to appear. If the thermostat is stuck in the open or closed position, it can affect the engine’s operating temperature and trigger the code. |
| Defective ECM | While rare, a defective ECM can also cause the P0599 code. If the ECM is not properly sending or receiving signals to the thermostat heater control circuit, it can trigger the code. |
It’s important to note that these are just some of the possible causes of the P0599 code on a Chevrolet Cruze. Proper diagnosis by a qualified technician is necessary to accurately identify and repair the underlying issue.
P0599 code on a Chevrolet Cruze Tech Note
Here’s a tech note on the P0599 code for a Chevrolet Cruze:
Tech Note: P0599 Thermostat Heater Control Circuit “A” Malfunction
Symptoms:
- Check Engine Light (CEL) illuminated
- Poor engine performance
- Reduced fuel efficiency
- Lack of heat from climate control system
Possible Causes:
- Faulty thermostat heater control circuit
- Poor electrical connection within the thermostat heater control circuit
- Failed thermostat
- Defective ECM
Diagnostic Steps:
- Connect a scan tool to the vehicle’s OBD-II port and check for any stored codes.
- If P0599 is present, clear the code and road-test the vehicle to see if the code returns.
- If the code returns, perform a visual inspection of the thermostat heater control circuit wiring and connections. Look for any signs of damage, corrosion, or loose connections.
- Use a multimeter to test the electrical continuity of the thermostat heater control circuit. Check for any open or short circuits.
- If the circuit tests OK, test the thermostat itself by checking its resistance with a multimeter. If the resistance is out of spec, replace the thermostat.
- If the thermostat is functioning properly, test the ECM by checking its ability to send and receive signals to the thermostat heater control circuit. If the ECM is defective, replace it.
Note: Depending on the specific model and year of the Chevrolet Cruze, the location and design of the thermostat and related components may vary. Always refer to the manufacturer’s service manual for specific diagnostic and repair procedures.
P0599 code on a Chevrolet Cruze possible symptoms and solutions
Table: P0599 code on a Chevrolet Cruze possible symptoms and solutions for them
| Symptoms | Solutions |
|---|---|
| Check Engine Light illuminated | The first step is to use a scan tool to read and clear the code. If the code returns, follow the diagnostic steps outlined in the tech note to identify and repair the underlying issue. |
| Poor engine performance | This symptom may be related to the engine running too hot or too cold due to a malfunctioning thermostat or heater control circuit. Follow the diagnostic steps outlined in the tech note to identify and repair the issue. |
| Reduced fuel efficiency | A malfunctioning thermostat or heater control circuit can cause the engine to run inefficiently, leading to reduced fuel economy. Once the issue has been identified, repaired, and the code cleared, monitor the vehicle’s fuel economy to ensure it returns to normal levels. |
| Lack of heat from climate control system | A failed thermostat or heater control circuit can also affect the vehicle’s climate control system, leading to a lack of heat. Once the underlying issue has been repaired, the climate control system should return to normal operation. |
It’s important to note that these are just some of the possible symptoms of the P0599 code on a Chevrolet Cruze. Accurate diagnosis by a qualified technician is necessary to identify and repair the underlying issue.
P0599 code on a Chevrolet Cruze Description
The P0599 code on a Chevrolet Cruze is related to the thermostat heater control circuit “A” and indicates that there is a malfunction or open circuit detected within the circuit.
The thermostat heater is an electrically controlled heating element that helps regulate the temperature of the engine coolant. The engine control module (ECM) uses this circuit to control the operation of the thermostat and ensure that the engine runs at the proper temperature.
When the ECM detects an issue with the thermostat heater control circuit, it will illuminate the check engine light and store the P0599 code in its memory. Some common symptoms associated with this code may include poor engine performance, reduced fuel efficiency, or a lack of heat from the vehicle’s climate control system.
To diagnose and repair the issue, a technician will typically perform a visual inspection of the wiring and connections in the thermostat heater control circuit. They may also use a multimeter to test the electrical continuity of the circuit and check for any open or short circuits.
If a fault is identified, the technician will typically replace any damaged components and clear the code from the ECM’s memory. Once repaired, the vehicle should be road-tested to ensure that the issue has been resolved and the check engine light is no longer illuminated.
How much does it cost to diagnose and fix the P0599 code on a Chevrolet Cruze?
The cost to diagnose and fix the P0599 code on a Chevrolet Cruze can vary widely depending on the underlying issue and the repair required to fix it. Here are some factors that can impact the cost:
- Diagnostic fee: A mechanic will typically charge a diagnostic fee to identify the underlying issue causing the P0599 code. This fee can range from $50 to $150, depending on the mechanic and location.
- Labor costs: The cost of labor to repair the P0599 code can vary based on the specific repair required. A simple fix, such as replacing a damaged wire or connector, may only take a few hours and cost around $100-$200 in labor. However, a more complex repair, such as replacing the ECM, can take several hours and cost upwards of $500 in labor.
- Parts costs: The cost of parts required to repair the P0599 code can vary based on the specific issue. For example, replacing a thermostat can cost anywhere from $50 to $150, depending on the make and model of the vehicle. However, if the issue is related to a damaged wire or connector, the cost of parts may be relatively low.
- Location: The cost of repairs can also vary based on location. Labor rates and parts costs can be higher in some areas than others.
In general, the cost to diagnose and fix the P0599 code on a Chevrolet Cruze can range from $100 to $1,000 or more, depending on the specific issue and repair required. It’s important to get an accurate estimate from a qualified mechanic before proceeding with any repairs.
How to fix the P0599 code on a Chevrolet Cruze?
The process for fixing the P0599 code on a Chevrolet Cruze will depend on the underlying issue causing the code to appear. Here are some general steps that a mechanic may take to diagnose and repair the issue:
- Use a scan tool to read and clear the code: A mechanic will use a diagnostic scan tool to read the P0599 code from the vehicle’s computer. Once the code has been recorded, they will clear it from the system to see if it returns.
- Check the thermostat heater control circuit: The mechanic will perform a visual inspection of the wiring and connections in the thermostat heater control circuit. They may use a multimeter to test the electrical continuity of the circuit and check for any open or short circuits.
- Test the thermostat: If the thermostat heater control circuit is functioning properly, the mechanic may test the thermostat itself by checking its resistance with a multimeter. If the resistance is out of spec, they will replace the thermostat.
- Check the ECM: If the thermostat and heater control circuit are functioning properly, the mechanic may need to test the ECM to ensure it is sending and receiving signals to the thermostat heater control circuit. If the ECM is defective, they will replace it.
- Road test the vehicle: Once the issue has been diagnosed and repaired, the mechanic will road test the vehicle to ensure that the P0599 code does not return and that the engine is running properly.
It’s important to note that the specific repair process will depend on the underlying issue causing the P0599 code to appear. A qualified mechanic will use diagnostic tools and procedures to identify and repair the issue.
Takeaways
Here are some key takeaways about the P0599 code on a Chevrolet Cruze:
- The P0599 code indicates a malfunction or open circuit in the thermostat heater control circuit “A” of a Chevrolet Cruze.
- Symptoms of the P0599 code may include poor engine performance, reduced fuel efficiency, or a lack of heat from the vehicle’s climate control system.
- To diagnose and repair the issue, a technician will typically perform a visual inspection of the wiring and connections in the thermostat heater control circuit. They may also use a multimeter to test the electrical continuity of the circuit and check for any open or short circuits.
- Repairs for the P0599 code can vary depending on the underlying issue. Some repairs may be simple, such as replacing a damaged wire or connector, while others may require more complex repairs such as replacing the thermostat or ECM.
- The cost to diagnose and fix the P0599 code can vary depending on the underlying issue, the cost of parts, and the location of the repair facility. It’s important to get an accurate estimate from a qualified mechanic before proceeding with any repairs.