"unintended problems" is correct and usable in written English.
You could use it to refer to issues that arise due to something unexpected or unforeseen. For example, "The introduction of this new policy caused a lot of unintended problems that no one anticipated."
Regulations — such as environmental rules to slow global warming — can cause unintended problems.
And arrests sometimes backfire, especially in inner-city neighborhoods, causing unintended problems for some of the women that society is trying to protect.
In single-core machines, it's fairly easy to debug programming errors or unintended problems because the cause can be traced back to a particular instruction.
He explored why, without a solid understanding of how people behave within the constraints from transportation policies, it is hard to tell which of these policies are really doing the job and which may be inducing unintended problems.
Once you start messing with DNS, all sorts of unintended problems arise.
Competition generally is a healthy thing, but the current rivalry among regulators to nail the most Wall Street scalps could create some unintended problems for investors by leaving the stock market under a cloud for longer than necessary.
A solution in one location may result in an unintended problem for a distant community.
Stormwater ponds are designed to efficiently collect sediment-associated contaminants, which creates an unintended problem for many municipalities because PAHs accumulate in pond sediment.
An unintended problem that arises from the diagnosis of the early onset of LVV with F-FDG PET/CT is the longer time period patients will be exposed to the adverse effects of glucocorticoids resulting in more pressure on the major need for more specific drugs to induce and maintain remission and to reduce the cumulative adverse effects of long-term glucocorticoid exposure.
Toyota's fortunes haven't changed much from last year, despite the major recalls for unintended acceleration problems.
It is Honda's second recall this year for unintended braking problems, after one in March of about 183,000 vehicles.
