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P0289 is a diagnostic trouble code (DTC) for "Cylinder 10 Injector Circuit High". 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.
The DTC P0289 code indicates that the number 10 cylinder is experiencing an above average amount of current at the fuel injector.
Code P0289 means that the fuel injector circuit for the number 10 cylinder fuel injector is drawing too much current. This is a generic code, which means it is common to all automakers. However, due to differences in technology used across different makes and models, the prognosis may be different for some vehicles. The code is stored when the car’s computer (ECM) detects higher than usual voltage at the circuit for fuel injector 10.
There are quite a few different potential causes for a P0289 code. These include:
The P0289 code can be accompanied by several different symptoms. The Check Engine light will most likely turn on when the code is set. In addition, the other symptoms possible include:
The process of diagnosing the underlying problem usually starts by clearing the code from the computer. A short test drive should then be undertaken to determine if the code resets. If it does, then the mechanic will conduct a visual inspection of the fuel injector, the wiring harness and the connector. The connector should be inspected thoroughly, and the mechanic should check for corroded, bent or broken pins.
Often, the problem is actually a faulty or clogged fuel injector, particularly in older model vehicles. Cleaning the affected injector can eliminate the code and restore normal functionality to the engine.
Once the repair has been made, the mechanic should again clear the code from the computer and test drive the vehicle to ensure proper operation of the fuel injector, and that the code is not reset again.
The most common mistake made when diagnosing the P0289 code is for the mechanic to automatically assume that the problem is a dirty fuel injector. This can lead to lost time attempting to clean an injector that has actually failed. Another common mistake is not checking the fuel injector/wiring harness connector for damage or corrosion.
The P0289 code is serious, although it will not prevent the vehicle from being driven. However, understand that damage can occur to the engine if the cylinder is not firing correctly due to a faulty fuel injector or injector connector. It is best to have the problem diagnosed and repaired immediately.
Several different repairs are possible to correct code P0289, depending on the underlying problem. These can include:
The most common problem causing a P0289 code is damage or dirt within the fuel injector. In some instances, this is related to the addition of ethanol in fuel, as it reduces lubrication from oil within gasoline. This can cause premature wear within the fuel injector, leading to early failure.
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.