Why am I showing a refund on my California tax forms of $94,289, when my income on W-2 shows only $93,419? I only need to file 540 EZ

Check your data entries ----especially the entries from your W-2 boxes 16 and 17.  Look for misplaced decimals and extra zeros.

A common cause of this that the information from the actual W-2 has been entered or imported into the wrong boxes. Double check the W-2 that's been entered in TurboTax. Make sure your income is shown in box 16 and the tax withholding is shown in box 17. 

Delete the W2 and enter it again manually.   That usually fixes it and clears any errors.