Nissan Altima P2014 Tumble Control Valve Position Sensor

What Does the P2014 Code Mean?

From CarParts.com

The P2014 code signifies a problem with the Intake Manifold Runner Position Sensor/Switch. This sensor communicates its status to the Powertrain Control Module (PCM), triggering the code when the PCM detects a signal outside the normal operating range. The Tumble Control Valve, connected to the intake manifold adapter, plays a crucial role in this system.

From Nissan Altima 2007-2012 Service Manual

The Tumble Control Valve Position Sensor is integrated into the Tumble Control Valve Actuator. This sensor, equipped with a permanent magnet and Hall IC, detects valve shaft movement and sends voltage signals to the ECM.

What are the Common Causes of the P2014 Code?

Possible Causes (AutoCodes.com)

  1. Faulty Tumble control valve actuator
  2. Faulty Tumble control valve motor
  3. Faulty Tumble control valve position sensor
  4. Faulty Accelerator pedal position sensor (APP sensor 2)
  5. Faulty Crankshaft position sensor (POS)
  6. Faulty EVAP control system pressure sensor
  7. Faulty Refrigerant pressure sensor

Common Causes (CarParts.com)

  1. Defective intake manifold control valve
  2. Defective intake manifold position sensor
  3. Failed intake manifold runner control actuator
  4. Faulty throttle plates or body
  5. Restricted vacuum lines
  6. Circuit issues, such as damaged wires or poor connections
  7. Faulty PCM

What are the Common Symptoms of the P2014 Code?

  1. Illuminated check engine light
  2. Reduced engine performance
  3. Misfires
  4. Poor fuel efficiency

How to Diagnose and Fix the P2014 Code

Diagnosing the P2014 Code

The diagnostic process involves several steps:

  1. Checking Ground Connection
    • Ensure the ground connection is intact.
  2. Examining Power Supply Circuits
    • Check the voltage between the tumble control valve actuator and ground.
    • Inspect continuity between the actuator harness connector and ECM harness connector.
  3. Identifying Short Circuits
    • Search for short circuits between terminals and repair as needed.
  4. Checking Components
    • Examine components like the refrigerant pressure sensor, crankshaft position sensor, and EVAP control system pressure sensor.
  5. Inspecting the APP Sensor
    • Verify the Accelerator Pedal Position (APP) sensor’s functionality.
  6. Replacing Accelerator Pedal Assembly
    • If necessary, replace the accelerator pedal assembly.
  7. Checking Ground Circuit for Open and Short
    • Ensure there are no open circuits or shorts in the ground circuit.
  8. Checking Input Signal Circuit for Open and Short
    • Inspect the input signal circuit for open circuits or shorts.
  9. Addressing Intermittent Incidents
    • Consider intermittent incidents that may require further attention.

Fixing the P2014 Code

The repair process for OBD-II trouble codes can vary between vehicle models. Professional assistance is recommended if you lack experience. If confident, diagnose the cause first and consult repair resources for solutions.

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