94 swift code 23

I got a 94 swift with 207000 km on it. Saturday morn went out to start it and it just kept rolling over but did not fire. left it for 5 min and tried again and it started right away. Spark is fine and its getting gas. Sunday morn same thing. Checked the codes and was getting a 23 (IAT sensor) Could this cause this problem? Thanks for any input. Its wed afternoon now and it has ran fine since sunday. Have put approx 600 km since then.