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P3485 is a diagnostic trouble code (DTC) for "Cylinder 11 Exhaust Valve Control Malfunction". 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.
P3485 is the universal code for Cylinder 11 Exhaust Valve Ctrl Circuit/Open, denoting a problem detected in cylinder 11. Other cylinder exhaust valve codes may be present as well.
Engine cylinders typically have either two or four valves each – intake valves bring fuel to the engine, while exhaust valves carry fuel vapors away. The timing of these valves opening and closing is closely controlled and monitored by the computer’s engine, either a PCM (powertrain control module) or ECM (engine control module).
The computer receives messages from the valves, in the form of voltage signals. When cylinder 11’s exhaust valve control circuit sends a signal outside of the expected parameters, the vehicle will set code P3485.
A number of conditions may cause this DTC to set:
While it is possible that any DTC could be a side effect of a faulty PCM or ECM, this is a rare occurrence. The cause is most frequently related to things like wiring or solenoid issues.
The Check Engine or Service Engine Soon Light typically illuminates. Other symptoms may include decreased fuel economy and sluggish acceleration. If your vehicle has variable valve timing (VVT), a mechanism which alters the timing of the valves opening in order to increase performance and decrease emissions, this function will probably be disabled as long as the code persists.
The diagnostic procedure for this code may include:
The vehicle will typically still operate when this code is stored, however engine performance may be affected. If you experienced compromised power or acceleration, this could cause a dangerous situation while driving. The best choice is to have the problem assessed and repaired by a qualified technician as soon as possible. This will help to not only prevent hazardous events while driving, but also to curtail any potential damage to other parts of the engine.
In order to resolve this DTC, your mechanic may perform the following repairs:
Diagnosing an engine code can involve a considerable amount of time, energy, and specialized tools. If you’re not sure you have the skill and equipment you need to complete the job, it’s best to let a trained technician handle the repair.
Not only do qualified professionals have the expertise and equipment needed to do the job efficiently and effectively, but they also know what to look for first in specific makes and models. Certain issues are common in particular vehicles and your qualified mechanic will know how to identify these quickly and easily.
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.