Nissan Altima P0222 P0223 TP Sensor

P0222 – Throttle/Pedal Position Sensor/Switch “B” Circuit Low

The Electric Throttle Control Actuator in the Nissan Altima 2007-2012 comprises a throttle control motor and a throttle position sensor. This sensor, a type of potentiometer, transforms the throttle valve’s position into output voltage, transmitting signals to the Engine Control Module (ECM). The ECM uses these signals to determine the throttle valve’s current opening angle and adjusts the throttle control motor accordingly.

DTC Logic

The detection logic for P0222 involves confirming the presence of the code through a specific procedure. If the DTC is confirmed, the diagnostic process begins.

DTC Confirmation Procedure
  1. Preconditioning:
    • Turn off the ignition switch and wait at least 10 seconds.
    • Ensure battery voltage is more than 8V at idle.
  2. Perform DTC Confirmation Procedure:
    • Start the engine and let it idle for 1 second.
    • Check for DTC.
    • If DTC is detected, proceed to Diagnosis Procedure.
    • If no DTC is detected, end inspection.
Diagnosis Procedure
  1. Check Ground Connection:
    • Turn off the ignition switch.
    • Inspect ground connection E9. Refer to Ground Inspection in GI-45, “Circuit Inspection.”
    • If the result is normal, proceed to the next step.
    • If not, repair or replace the ground connection.
  2. Check Throttle Position Sensor 1 Power Supply Circuit:
    • Disconnect the electric throttle control actuator harness connector.
    • Turn on the ignition switch.
    • Check voltage between the actuator harness connector and ground.
    • If the result is normal, proceed to the next step.
    • If not, repair open circuit or short in the harness or connectors.
  3. Check Throttle Position Sensor 1 Ground Circuit for Open and Short:
    • Turn off the ignition switch.
    • Disconnect ECM harness connector.
    • Check continuity between the actuator harness connector and ECM harness connector.
    • If the result is normal, proceed to the next step.
    • If not, repair open circuit or short in the harness or connectors.
  4. Check Throttle Position Sensor 1 Input Signal Circuit for Open and Short:
    • Check continuity between the actuator harness connector and ECM harness connector.
    • If the result is normal, proceed to the next step.
    • If not, repair open circuit or short in the harness or connectors.
  5. Check Throttle Position Sensor:
    • Refer to EC-775, “Component Inspection.”
    • If the result is normal, proceed to Inspection End.
    • If not, go to the next step.
  6. Replace Electric Throttle Control Actuator:
    • Replace the actuator and follow the special repair requirements.
    • Inspection End.
  7. Check Intermittent Incident:
    • Refer to GI-42, “Intermittent Incident.”
    • Inspection End.

Component Inspection

  1. Check Throttle Position Sensor:
    • Turn off the ignition switch.
    • Reconnect all disconnected harness connectors.
    • Perform EC-565, “THROTTLE VALVE CLOSED POSITION LEARNING: Special Repair Requirement.”
    • Turn on the ignition switch.
    • Set shift lever to D (CVT) or 1st (M/T) position.
    • Check voltage between ECM harness connector and ground.
    • If the result is normal, Inspection End.
    • If not, go to the next step.
  2. Replace Electric Throttle Control Actuator:
    • Replace the actuator and follow the special repair requirements.
    • Inspection End.

P0223 – Throttle/Pedal Position Sensor/Switch “B” Circuit High

The P0223 code indicates a high input in the Throttle/Pedal Position Sensor/Switch “B” Circuit. It can lead to various symptoms affecting the vehicle’s performance.

What the P0223 Code Means

The P0223 code suggests that the ECM has detected voltage from the throttle position sensor exceeding the acceptable range set by the manufacturer.

Causes of the P0223 Code

  1. A faulty throttle position sensor.
  2. A faulty ECM.
  3. Damaged, unplugged, or broken wiring harness associated with the throttle position sensor.
  4. Malfunction within the throttle body.
  5. Throttle position sensor out of alignment.

Symptoms of the P0223 Code

  1. Loss of power.
  2. Poor acceleration.
  3. Difficulty starting the engine or no start at all.
  4. Unresponsive accelerator pedal.
  5. Illumination of the Check Engine Light.

Diagnosis of the P0223 Code

Mechanics can diagnose the P0223 code through visual inspections and testing procedures.

  1. Visual Inspection:
    • Inspect the throttle body, ensuring proper operation.
    • Check alignment of the throttle position sensor with the throttle body.
    • Verify the secure connection of all electrical connectors.
  2. Throttle Position Sensor Voltage Test:
    • Use a digital multimeter to test the throttle position sensor’s voltage.
    • Follow the manufacturer’s recommended procedure.
    • If the throttle position sensor fails the voltage test, replace it.
    • If the sensor passes the test, use a high-tech scan tool to test the ECM for faults.

Common Mistakes When Diagnosing P0223

A common mistake is replacing the throttle position sensor without fully testing all parts of the system. Comprehensive testing helps identify the root cause and prevents wasted time and money.

Severity of the P0223 Code

The P0223 code can significantly impact the vehicle’s performance, making it important to address the issue promptly. Timely diagnosis and repairs can save fuel and ensure a smoother driving experience.

Repairs for the P0223 Code

  1. Replace the throttle position sensor.
  2. Replace the Engine Control Module.
  3. Repair or replace wiring associated with the throttle position sensor.
  4. Repair or replace the throttle body.
  5. Realign the throttle position sensor.

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