P0223 Infiniti Code Meaning, Symptoms, Causes and How to Fix

The P0223 Infiniti Code, also referred to as the Throttle Position Sensor/Switch 2 Circuit High Input, is a prevalent issue encountered in Infiniti vehicles.

This particular code is activated when the throttle position sensor 2 transmits an excessively high voltage to the Engine Control Module (ECM).

The throttle position sensor plays a vital role in responding to throttle valve movement and converting it into output voltage. Subsequently, the ECM regulates the throttle control motor based on the throttle valve position and driving conditions.

In this article, we will delve into the potential causes and remedies for the P0223 Infiniti Code.

P0223 Infiniti Code Meaning, Symptoms, Causes and How to Fix

Meaning

The P0223 Infiniti code signifies a throttle position sensor/switch 2 circuit high input, causing potential engine light activation and poor throttle response.

The throttle position sensor monitors the throttle valve’s angle, translating it to voltage for the Engine Control Module (ECM).

When P0223 is triggered, it indicates an abnormally high voltage is being sent by the sensor.

Diagnosing this issue typically involves checking the sensor’s wiring harness, connectors, and other related components to resolve the malfunction.

Symptoms

The P0223 Infiniti code shows several symptoms which happen because the throttle position sensor 2 sends too much voltage to the Engine Control Module (ECM). This causes the engine light to turn on and the throttle to not work properly.

The main symptoms are:

1. Engine light on: This light is a sign of a problem with the throttle position sensor 2 circuit.
2. No throttle response: The throttle does not work when pushed, and the engine does not get more power.
3. Weak engine performance: The engine does not accelerate well and may have trouble keeping speed.
4. Possible limp mode: The ECM might limit the engine power to prevent damage, which lets you drive to a repair place.

It is important to fix these issues quickly to prevent more damage to the car and to keep it driving well.

Causes

The P0223 Infiniti code may be caused by:

1. A bad throttle position sensor.
2. A throttle position sensor harness that is open or has a short.
3. A bad connection in the throttle position sensor’s electrical parts.
4. A bad accelerator pedal position sensor.

These reasons might make the Engine Control Module see a high input signal. A bad sensor can give wrong signals. A harness with a problem can stop the signal. A bad connection or a bad pedal sensor can also change the throttle readings.

To find the problem, look at the wiring and connections for damage. Check for pins that are broken or have rust. A professional can help figure out the problem. Use service manuals for more help with the P0223 Infiniti code.

Tools Needed to diagnose

To identify the P0223 Infiniti error, you need specific tools. These are important to find and fix the cause of the high signal in the throttle position sensor.

The tools you need include:

1. OBD-II Scanner: Use this to get the error codes from the car’s computer, including the P0223 code.
2. Multimeter: This measures the electric values in the throttle position sensor’s wires to see if anything is wrong.
3. Wiring Diagrams: You need the car’s wiring plans to follow the wires and find any disconnects, shorts, or bad connections.
4. Throttle Position Sensor Tester: This checks the sensor’s electric output and how it reacts when the throttle moves.

With these tools, car technicians can correctly find and solve the issue with the throttle position sensor circuit.

How to fix Step by Step

Step 1: Disconnect the negative battery cable to prevent any electrical mishaps.

Step 2: Locate the throttle position sensor (TPS) on the throttle body.

Step 3: Remove the TPS’s electrical connector.

Step 4: Inspect the connector and wiring for any damage or corrosion.

Step 5: If necessary, repair or replace the connector or wiring.

Step 6: Remove the TPS from the throttle body by loosening the mounting bolts.

Step 7: Install the new TPS and tighten the mounting bolts securely.

Step 8: Reconnect the TPS electrical connector.

Step 9: Reattach the negative battery cable.

Step 10: Clear the P0223 Infiniti code using a scan tool.

Step 11: Start the engine to verify if the code is no longer present.

Common Diagnosis Mistakes

When diagnosing the P0223 Infiniti code, it is important to avoid some common mistakes that can lead to incorrect conclusions. Here are four mistakes to avoid:

1. Do not forget to check the throttle position sensor (TPS) and accelerator pedal position sensor (APPS) for any problems. These sensors are important for the throttle control system.
2. Make sure to carefully examine the wiring harness and connectors for the throttle position sensor. Problems like broken circuits or bad electrical connections can cause the high input voltage that the ECM detects.
3. Do not ignore any safety recalls for Infiniti vehicles. Check for recalls that might be related to the P0223 code.
4. Do not just use the code description. It is important to do a full diagnostic test. This includes looking at parts, testing components, and making sure the code is correct.

Repair Cost

The repair cost for the P0223 Infiniti code typically involves 1 hour of labor, ranging from $75 to $150 per hour.

Additional costs may arise from the specific cause of the code and necessary part replacements.

Prices can vary by location and shop, so contacting local auto repair shops for accurate estimates is recommended.

It’s also beneficial to compare prices before authorizing the repair.

Can I drive safely with this code?

No, driving with the P0223 Infiniti code is not safe due to possible engine malfunctions and unreliable throttle response.

The P0223 code signifies a high voltage issue with throttle position sensor 2. This can impair engine response to throttle inputs, leading to unpredictable vehicle behavior.

Driving with this code can compromise safety, so it is crucial to fix the issue promptly.

Wrapping Up

The P0223 Infiniti Code, which indicates a throttle position sensor/switch 2 circuit high input, is a common issue in Infiniti vehicles.

It can cause symptoms such as poor throttle response and reduced engine performance.

The main causes of this code include faulty sensors, wiring issues, and electrical connections.

It is important to diagnose and fix this issue promptly to ensure safe driving and prevent further damage to the vehicle.