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P1084 Nissan Code - Exhaust Valve Timing Control Position Sensor Bank 2 Circuit

Quick Answer

The P1084 code for Nissan vehicles indicates a problem with the Exhaust Valve Timing Control Position Sensor Bank 2 Circuit. Common causes include Faulty Sensor: The most common cause of this code is a malfunctioning exhaust valve timing control position sensor, Wiring Issues: Damaged or corroded wiring connections to the sensor can also trigger this code, Electrical Problems: Issues with the electrical circuit, such as blown fuses or relays, can disrupt the sensor's operation. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1084 Nissan indicates Exhaust Valve Timing Control Position Sensor Bank 2 Circuit.
Common causes
Common causes include Faulty Sensor: The most common cause of this code is a malfunctioning exhaust valve timing control position sensor, Wiring Issues: Damaged or corroded wiring connections to the sensor can also trigger this code, Electrical Problems: Issues with the electrical circuit, such as blown fuses or relays, can disrupt the sensor's operation.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Aug 30, 2024
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Code P1084 Nissan Description

The P1084 code for Nissan vehicles indicates a problem with the Exhaust Valve Timing Control Position Sensor Bank 2 Circuit. This sensor is responsible for monitoring the position of the exhaust valve timing control solenoid, which helps regulate the timing of the exhaust valves in relation to the engine's operation. If this sensor detects an issue with the circuit, it can lead to improper timing of the exhaust valves, resulting in poor engine performance, reduced fuel efficiency, and potential damage to the engine over time.

OBDII Code P1084 Nissan - Exhaust Valve Timing Control Position Sensor Bank 2 Circuit
P1084 Nissan Code - Exhaust Valve Timing Control Position Sensor Bank 2 Circuit

Common Causes of P1084 Nissan

  1. Faulty Sensor: The most common cause of this code is a malfunctioning exhaust valve timing control position sensor.
  2. Wiring Issues: Damaged or corroded wiring connections to the sensor can also trigger this code.
  3. Electrical Problems: Issues with the electrical circuit, such as blown fuses or relays, can disrupt the sensor's operation.
  4. Timing Control Solenoid Failure: A failed exhaust valve timing control solenoid can impact the sensor's ability to monitor the exhaust valve timing accurately.
  5. Engine Control Module (ECM) Failure: A malfunctioning ECM can also contribute to the P1084 code being triggered.

Symptoms of P1084 Nissan

  1. Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the dashboard.
  2. Engine Misfires: A faulty exhaust valve timing control sensor can lead to engine misfires, rough idling, or hesitation during acceleration.
  3. Reduced Power: The engine may experience a loss of power or decreased performance due to incorrect timing of the exhaust valves.
  4. Poor Fuel Economy: Inefficient exhaust valve timing control can result in decreased fuel efficiency, leading to more frequent trips to the gas station.
  5. Engine Stalling: In severe cases, the engine may stall or fail to start altogether if the issue is left unresolved.

How to Fix P1084 Nissan

  1. Diagnose the Issue: Use a diagnostic scanner to retrieve the specific fault code and pinpoint the exact cause of the problem.
  2. Inspect Wiring and Connections: Check the wiring harness and sensor connections for any damage, corrosion, or loose connections.
  3. Replace Sensor: If the exhaust valve timing control position sensor is faulty, replace it with a new sensor following the manufacturer's guidelines.
  4. Test System: After replacing the sensor, test the system to ensure proper operation and clear the fault code from the ECM.
  5. Clear Codes: Use the diagnostic scanner to clear the stored fault codes in the ECM and reset the check engine light.

Cost to Fix P1084 Nissan

The typical cost to repair the Exhaust Valve Timing Control Position Sensor Bank 2 Circuit issue can range from $150 to $300 for parts and labor. However, the actual cost may vary depending on the specific make and model of the vehicle, the location of the repair shop, and any additional components that may need to be replaced. It's recommended to consult with a trusted mechanic or auto repair shop for a more accurate estimate based on your vehicle's needs.

When is the Code Detected?

An excessively high or low voltage from the sensor is sent to Engine Control Module (ECM).

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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