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P0086 is a diagnostic trouble code (DTC) for "Exhaust Valve Control Solenoid Circuit High (Bank 2)". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $114.99 . Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.0 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
P0086 is a OBD2 diagnostic trouble code indicating a fault within the exhaust valve control circuit. This code is similar to P0085 and P0084.
P0086 is a DTC when high voltage is found in the exhaust valve control solenoid circuit bank 2. The fault is triggered when the ECU tries to control the solenoid and finds the voltage to be out of range with high voltage present, this triggers a Check Engine Light to be set on the dashboard. Once this light is set the vehicle is put into a failsafe mode to prevent damage and disabling variable valve timing.
Any felt symptoms will be preceded by the Check Engine Light being displayed on the dash. Once this Check Engine Light is set, a failsafe mode is set to prevent any further damage to the vehicle or engine.
This disabled the variable valve timing which may decrease fuel economy and result in slower than normal vehicle acceleration. The failsafe mode will remain until the code is cleared or the fault is resolved.
A scan tool is used to check for any codes present.
All of the freeze frame data associated with each code will be checked to tell us about the conditions that the code was triggered under.
The codes will then be cleared and the vehicle will be taken on a test drive under similar conditions as the freeze frame data.
Once the code is seen again on the test drive, a visual inspection will be performed to look for any damage, loose connections, or shorted wiring.
The scan tool will then be used to monitor live solenoid operation.
If the solenoid passes all tests, then the ECU will need to be tested by manufacturer specific testing procedures.
Most commonly mistakes are made when steps are not followed or are skipped entirely.
The solenoid operation must be tested before it is replaced, even though it is normally the cause of P0086.
P0086 should not prevent the vehicle from being driven to a safe location after the DTC is set. Though caution should be taken with the vehicle if it has a lack of power when acceleration and poor gas milage. The vehicle will operate normally once the fault is repaired.
The Variable valve timing system uses the ECU to control the bank 1 and 2 intake and exhaust control solenoids. This system is used to change valve timing as needed to increase engine power and offer improved fuel economy.
Bank 2 is typically found on the passenger side of the engine compartment. The exhaust valve solenoid is usually located near the exhaust manifold on the engine cylinder head.
An advanced scan tool is required to properly diagnose P0086. These scan tools offer the ability to view sensor and solenoid operation and its changes over time. This helps technicians diagnose electrical issues especially intermittent faults that would otherwise be hard to track down.
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