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P0026 is a diagnostic trouble code (DTC) for "Intake Valve Control Solenoid Circuit Range/Performance (Bank 1)". 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.
Intake Valve Control Solenoid Circuit Range/Performance (Bank 1)
P0026 is the OBD-II generic code indicating the engine control module (ECM) has determined that the variable valve lift solenoid for the intake valves for bank 1 takes too long to engage or does not engage.
The ECM activates the intake valve solenoid for bank 1, but the valves do not change to the high lift position.
The intake valve solenoid has an open or short circuit.
The wiring or connections to the intake valve solenoid is shorted or open.
The ECM is defective or the connection to the ECM is loosing contact.
The engine can experience a lack of power if the valve lift fails in the low position.
The engine may run rough or stall if one of the two intake camshafts are stuck in a high valve lift position.
The engine will run very erratically depending on the intake valves failed position.
The Check Engine Light will be illuminated indicating a problem.
Visually checks the electrical connections and wire harness to the bank 1 intake valve solenoid.
Clears codes and verifies if the code returns before doing any further testing
Installs the test intake valve control solenoid for proper diagnosis and follows the pinpoint test to check to see if the valves change during the testing
Commands the test solenoid off and the intake valves should go to high lift
Commands the test solenoid on and the intake valves should go to low lift
Follows 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 if the problem is still present.
Do not attempt any diagnosis without special tools like a test solenoid.
Follow any pinpoint test done, step by step, to isolate the failure on the system.
Do not replace any parts unless directed by the pinpoint or visual test.
If one of the camshafts is stuck in high lift and the other in a low lift the engine may run rough and may stall when coming to a stop.
The engine can hesitate and have a lack of power during acceleration.
The engine may start very hard or run too lean.
Clearing the fault codes and perform a road test to try and verify failure
Testing the solenoid installed to see if the valves work okay and replacing the intake lift solenoid
Repairing or replacing the wiring or connection to the intake lift solenoid
Repairing the ECM connector or replacing the ECM
The intake valve lift mechanism is actuated by the lift solenoid, which opens and closes oil pressure to the the lift mechanism to shift it from the low lift lobe to the high lift lobe on the camshaft.
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