By Ezra Lane The P1220 code in Nissan vehicles indicates a malfunction in the Throttle Position Sensor (TPS) circuit, which affects throttle response and can lead to engine performance issues. Symptoms include engine misfires, poor acceleration, and decreased fuel efficiency, often accompanied by a Check Engine Light. Primary causes range from a faulty TPS to electrical issues like damaged wiring or connections. Diagnosis requires tools such as an OBD-II scanner and a multimeter. It is crucial to address P1220 promptly, as continued driving may cause further engine damage. Additional insights on repair processes and potential costs follow.
P1220 Nissan Code Meaning
The P1220 code in Nissan vehicles indicates a fault in the throttle position sensor circuit, affecting engine performance and fuel efficiency.
Common causes include a defective sensor, wiring issues, or poor connections.
Prompt diagnosis and repair are necessary to restore optimal vehicle operation.
Error Code P1220 Symptoms
Symptoms linked to the P1220 code in Nissan cars can affect how the vehicle drives and its engine performance. Issues often arise from a faulty throttle position sensor, which can disrupt engine function.
- Engine Misfires or Stalling: When the throttle position sensor malfunctions, it can lead to irregular fuel delivery. This may cause the engine to misfire or even stall, making the car hard to control.
- Decreased Fuel Efficiency: A bad throttle position sensor can change the air-fuel mixture. This change can hurt fuel efficiency, leading to poorer performance and higher fuel costs.
- Check Engine Light Activation: If the Check Engine Light comes on, it indicates a problem with the throttle position sensor circuit. This warning means you should check the issue quickly to avoid more serious problems.
Drivers might also find it hard to start the engine or notice a loss of power when accelerating.
These issues show that the P1220 code needs attention to keep the vehicle running well and safe on the road.
Causes of Nissan P1220 Fault Code
Finding out why the Nissan P1220 fault code appears is important for fixing the problem. This code usually points to an issue with the throttle position sensor (TPS). When the TPS doesn't work right, it can send wrong throttle position information to the engine control module (ECM). Knowing the common causes can help you solve the issue more easily.
Here are some key reasons for the P1220 fault code:
- Faulty Throttle Position Sensor (TPS): If the TPS is broken, it may give incorrect readings. This can hurt engine performance and trigger the P1220 code.
- Electrical Problems: Issues like damaged wires, loose connections, or short circuits can interfere with the TPS signal. Checking the electrical connections is important to ensure they are working properly.
- Accelerator Pedal Position Sensor Failure: This sensor works with the TPS to manage how the engine performs. If it stops working, it can also cause the P1220 code, signaling problems in the throttle control system.
Sometimes, problems with the ECM software can lead to errors in reading the TPS, making it harder to diagnose the issue.
Tools Needed to Diagnose
To diagnose the P1220 fault code, you need specific tools to check the throttle position sensor and its wiring. Accurate measurements and data are key to finding the problem. Here are the essential tools:
- Digital Multimeter: Use this tool to measure voltage and resistance in the throttle position sensor circuit. It helps detect any issues that might suggest a sensor failure or wiring problem.
- OBD-II Scanner: This device reads trouble codes and shows real-time data from the vehicle's engine control unit. It helps to understand the P1220 code and see how the vehicle is performing.
- Wiring Diagram: A specific wiring diagram for your model is helpful for understanding the throttle position sensor circuit. It can help identify problems like short circuits or broken connections.
You should also use a test light to check that power and ground are working at the throttle position sensor.
Basic hand tools, like screwdrivers and socket sets, may be needed to access and change any faulty parts. Each tool helps ensure you get an accurate diagnosis.
How to Fix P1220 Nissan Error Code – Step by Step
Step 1: Begin by using an OBD-II scanner to confirm the presence of the P1220 error code and check for any additional codes that may indicate related issues.
This initial diagnostic step is essential for understanding the broader context of the problem.
Step 2: Thoroughly inspect the wiring and connectors leading to the fuel pump control module.
Look for signs of damage, corrosion, or loose connections that could disrupt communication and contribute to the error.
Step 3: If the wiring appears intact, proceed to test the fuel pump relay.
A malfunctioning relay may fail to provide adequate power to the fuel pump control module. If the relay is found to be defective, replace it.
Step 4: If the fuel pump control module is determined to be faulty after the previous checks, replace it with a new module.
Ensure that all connections are secure and properly aligned during installation to prevent future issues.
Step 5: After completing the repairs, clear the trouble codes using the scanner and conduct a test drive.
This final step verifies that the issue is resolved and that the vehicle operates normally, ensuring a thorough and effective repair process.
Common Diagnosis Mistakes
To fix the P1220 Nissan error code, it's important to avoid some common mistakes that can lead to wrong diagnoses. Here are key points to keep in mind:
- Check Wiring and Connectors: Always inspect the wiring and connectors for any damage or corrosion. These issues can sometimes look like a problem with the throttle position sensor, which can lead to wrong conclusions.
- Understand the Code: Don't assume the P1220 code only points to a throttle position sensor issue. Look for possible problems with the fuel pump control module or other related parts that might be causing the issue.
- Perform Physical Inspections: Do not rely only on the data from diagnostic scanners. Physical checks are crucial. Sometimes, problems can come and go without showing a consistent error code, so thorough examination matters.
P1220 Nissan Repair Cost
Fixing a P1220 error code in a Nissan can cost between $300 and $700. The price depends on the vehicle's model and year. The fuel pump control module is often the main part that needs replacing, and this can cost between $200 and $500.
On top of parts, you'll also pay for labor, which usually ranges from $100 to $200. Labor costs can be higher in cities compared to rural areas.
It's a good idea to get quotes from different repair shops. This helps you find competitive prices and understand what the average cost for the repair might be.
For example, fixing a Nissan Altima may be less expensive than a more complex model like the Nissan Pathfinder, which could require more labor or special parts. Knowing these costs can help you plan your budget for the repair.
Related Error Codes on Nissan
When diagnosing problems with Nissan cars, you may encounter several error codes that show up alongside the P1220 code. Each code points to specific issues related to the throttle position sensor circuit. Knowing these codes helps in fixing the problems effectively.
| Error Code | Description |
|---|---|
| P0120 | Throttle Position Sensor Circuit Range/Performance Malfunction. This can cause the engine to respond poorly or stall. |
| P0121 | Throttle Position Sensor Signal Out of Range. This often leads to less engine power and reduced efficiency. |
| P0122 | Low Voltage Input from Throttle Position Sensor. This can impact acceleration and overall vehicle performance. |
| P0123 | High Voltage Input from Throttle Position Sensor. This may cause erratic engine behavior and trigger the Check Engine Light. |
Each error code gives clues about the throttle position sensor issue. Identifying these codes helps to find the problem and decide on the right repairs. For example, if you see a P0122 code, you might need to check the wiring for any shorts or disconnections. A P0123 code could indicate that the sensor needs to be replaced. Proper diagnosis leads to better repairs and improves vehicle performance.
Can I drive safely with P1220 Nissan?
No, you should not drive safely with a P1220 code in your Nissan.
This code means there's a problem with the Throttle Position Sensor, which can cause engine issues and make your car hard to control.
It's best to fix it before driving again.
People Also Ask
What Vehicles Are Affected by the P1220 Code?
The P1220 code mostly affects Nissan cars like the Altima, Maxima, Sentra, and Pathfinder, especially ones made from the early 2000s to the mid-2010s. Some Infiniti models that use similar engines can also have this code.
Can a Bad Battery Cause the P1220 Code?
Yes, a bad battery can cause the P1220 code. If the battery doesn't work well, it can make the fuel pump control module act funny. This can lead to problems with how the fuel is delivered to the engine, which makes the code show up.
How Can I Reset the P1220 Error Code?
To reset the P1220 error code, first, disconnect the car battery for 10-15 minutes. Then, reconnect it. Start the engine and let it run. Check if the Check Engine Light stays on after fixing the problem that caused the error.
Is the P1220 Code Related to the Check Engine Light?
Yes, the P1220 code is connected to the Check Engine Light. When the light comes on, it means there is a problem in the car's system. This means you should check it out and fix any issues so the car works well.
What Are the Long-Term Effects of Ignoring P1220?
If you ignore the P1220 code, your engine might have bad problems like misfires and using more gas. This can also hurt engine parts and cost a lot to fix later. Plus, it could make your car pollute more.