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Engine-Codes – Generic – P1084

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

Quick Answer

The P1084 code indicates a problem with the Exhaust Valve Timing Control Position Sensor Bank 2 Circuit. Common causes include Faulty exhaust valve timing control position sensor, Wiring or connector issues in the sensor circuit, ECM software malfunction. 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 indicates Exhaust Valve Timing Control Position Sensor Bank 2 Circuit.
Common causes
Common causes include Faulty exhaust valve timing control position sensor, Wiring or connector issues in the sensor circuit, ECM software malfunction.
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 Description

The P1084 code 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 in bank 2 of the engine. The engine control module (ECM) uses this information to adjust the timing of the exhaust valves for optimal performance and fuel efficiency. When this sensor malfunctions or the circuit is disrupted, it can lead to issues with engine performance, fuel economy, and emissions.

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

Common Causes of P1084

  1. Faulty exhaust valve timing control position sensor
  2. Wiring or connector issues in the sensor circuit
  3. ECM software malfunction
  4. Engine mechanical problems affecting valve timing
  5. Poor quality or contaminated engine oil

Symptoms of P1084

  1. Check Engine Light is illuminated
  2. Decreased fuel efficiency
  3. Rough idling or stalling
  4. Engine misfires
  5. Loss of power or acceleration

How to Fix P1084

  1. Diagnose the issue by using a scan tool to check for the P1084 code and to monitor sensor data.
  2. Inspect the wiring and connectors for any damage or corrosion, repairing or replacing as needed.
  3. Test the exhaust valve timing control position sensor for proper function, replacing if faulty.
  4. Clear the code and reset the ECM to see if the issue persists.
  5. Test drive the vehicle to ensure the problem has been resolved and that the Check Engine Light does not reappear.

Cost to Fix P1084

The cost of repairing the Exhaust Valve Timing Control Position Sensor Bank 2 Circuit can vary depending on the make and model of the vehicle, the location of the repair shop, and the extent of the issue. On average, the parts for this repair can range from $100 to $300, while labor costs can range from $100 to $300 as well. Overall, the total cost of the repair may fall between $200 and $600. It is recommended to obtain quotes from local auto repair shops to get a more accurate estimate.

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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Code P1084 Information for Specific Makes

  • P1084 Audi — Exhaust Bank 3- Mixture Adaption Range 2 Lower Rich Limit Not Reached
  • P1084 BMW — Fuel Control Mixture Rich Bank 1 Sensor 1
  • P1084 Infiniti — Exhaust Valve Timing Control Position Sensor Bank 2 Circuit
  • P1084 Lexus — HC Absorber Switching Valve Bank 2 Stuck Closed
  • P1084 MINI — Fuel Control Mixture Rich Bank 1 Sensor 1
  • P1084 Nissan — Exhaust Valve Timing Control Position Sensor Bank 2 Circuit
  • P1084 Volkswagen — Exhaust Bank 3- Mixture Adaption Range 2 Lower Rich Limit Not Reached
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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