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P0029 is a diagnostic trouble code (DTC) for "Exhaust Valve Control Solenoid Circuit Range/Performance (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. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
Exhaust Valve Control Solenoid Circuit Range/Performance (Bank 2)
P0029 is the OBD-II generic code indicating the engine control module (ECM) has determined that the variable valve lift solenoid for the exhaust valves for bank 2 takes too long to engage or does not engage.
The ECM activates the exhaust valve solenoid for bank 2 and the valve lift does not shift.
The exhaust variable valve lift solenoid is short circuited internally.
The variable valve lift solenoid has an open circuit internally.
The wiring or connections to the exhaust valve solenoid or the ECM is shorted or open.
Visually check the electrical connections and wire harness to the bank 2 exhaust valve solenoid.
Clear codes and verify if the code returns.
Utilize the test solenoid to operate the variable valve lift is operational mechanically.
Test the lift solenoid for internal short or open circuit to solenoid specifications.
Follow the manufacturer's specific pinpoint tests for further diagnosis.
Follow these simple guidelines to prevent mistakes:
Verify the failure by clearing the code and seeing it the problem is still present.
Do not attempt any diagnosis without special tools like a test solenoid.
Follow any pinpoint test, step by step, to isolate the failure on the system.
Do not replace any parts unless directed by the pinpoint or visual testing.
The engine can hesitate and have a lack of power during acceleration.
The engine may start real hard or run too lean.
The engine may stall when stopping or run rough.
Clearing the fault codes and performing a road test to try and verify the failure
Replacing the variable valve lift solenoid for the exhaust camshaft bank 2
Repairing or replacing the wiring or connection to the exhaust lift solenoid
Repairing the ECM connector or replacing the ECM
The variable valve lift solenoid can get clogged with sludge or thick oil, and not actuate the variable valve lift mechanism. The oil needs to be kept clean and of the proper viscosity.
YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.