What Does the P2014 Code Mean?
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)
- Faulty Tumble control valve actuator
- Faulty Tumble control valve motor
- Faulty Tumble control valve position sensor
- Faulty Accelerator pedal position sensor (APP sensor 2)
- Faulty Crankshaft position sensor (POS)
- Faulty EVAP control system pressure sensor
- Faulty Refrigerant pressure sensor
Common Causes (CarParts.com)
- Defective intake manifold control valve
- Defective intake manifold position sensor
- Failed intake manifold runner control actuator
- Faulty throttle plates or body
- Restricted vacuum lines
- Circuit issues, such as damaged wires or poor connections
- Faulty PCM
What are the Common Symptoms of the P2014 Code?
- Illuminated check engine light
- Reduced engine performance
- Poor fuel efficiency
How to Diagnose and Fix the P2014 Code
Diagnosing the P2014 Code
The diagnostic process involves several steps:
- Checking Ground Connection
- Ensure the ground connection is intact.
- 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.
- Identifying Short Circuits
- Search for short circuits between terminals and repair as needed.
- Checking Components
- Examine components like the refrigerant pressure sensor, crankshaft position sensor, and EVAP control system pressure sensor.
- Inspecting the APP Sensor
- Verify the Accelerator Pedal Position (APP) sensor’s functionality.
- Replacing Accelerator Pedal Assembly
- If necessary, replace the accelerator pedal assembly.
- Checking Ground Circuit for Open and Short
- Ensure there are no open circuits or shorts in the ground circuit.
- Checking Input Signal Circuit for Open and Short
- Inspect the input signal circuit for open circuits or shorts.
- 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.