Has anyone had any experience with this code, which means the engine is running too rich. Prior to the CEL coming on, the vehicle was shifting very harsh and abruptly. It would also hiccup around 70 mph. It didn't feel like an engine hesitation but more like a harsh clutch engagement. I cleared the code and everything appears to be normal.  This is the second time I have had the abrupt shifting issues. The 1st time, there was no CEL. I disconnected the battery for 30 minutes and after that everything was back to normal. This occurred about a month ago. The car is an 09 Pure with just under 13k miles. 

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Drove the car today. No codes and no rough shifting. Everything is normal. I hope it stays that way.

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