Attack on Central City - S3-E14
Factual error: Wells states that there are "precisely 90,000" possible 5-digit combinations for the keypad (to abort the nuclear code). However, there are actually 100,000 possible combinations (10^5).
The Flash (2014)
1 factual error in season 3 - chronological order
Starring: Danielle Panabaker, Tom Cavanagh, Candice Patton, Grant Gustin, Rick Cosnett
Going Rogue - S1-E4
Continuity mistake: When Captain Cold shots Joe with the ice gun, he hits Flash instead, in the left side of his abs, but in the next shot the ice switches sides.
Harrison Wells: You know what? In battle, choose your weapon wisely. Some people choose a gun. I choose a Philips head screwdriver.
Cisco: Oh, oh. I'm sorry. You're so particular.
Harrison Wells: Ramone, could you just please? Have you ever worked with a tool before?
Cisco: I'm working with one now.
Crisis on Earth-X, Part 3 - S4-E8
Trivia: Supergirl says to her doppelganger "General, can you step outside." That line was said by Superman in Superman II.
Question: Why did Eobard believe that pretending to be crippled would divert any suspicion away from him? He could simply walk around even after the accelerator exploded and people could just say that he was lucky that he didn't get injured, mutilated or even killed.