Troubleshooting P1294

'99 Sahara Stock.4.0 inline 6

Check engine light came on. Took it to Auto Zone. Returned error code P1294. "Injector High Side Open - Bank 2/Target idle not reached"

Anyone know what this means? Looking for somewhere to start.

Thanks,
B

Well guess that one stumped everyone. I ended up taking to the shop and having them determine whats was going on. It ended up being a vacuum leak.