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vipertech763, automotive technician
Category: Dodge
Satisfied Customers: 1854
Experience:  gold certified, dodge viper certified
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2005 Dodge Grand Caravan SXT: the check engine light..intermittently

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I have a 2005 Dodge Grand Caravan SXT that I bought last Fall. It currently has around 64000 miles, and since February, the check engine light has been coming off and on intermittently. It will go off if I do the 50 "off and on's " with the ignition, and stay off for anywhere from 1 to 2 months...then back on. It showed me Code p0138 for a long time, which I know is the O2 Sensor. I'm getting ready for a long trip next week, so had an LOF yesterday and the light turned off. (I plan to replace the O2 sensors when I return)
Things were fine and no light on until I went in to town today. The Check engine light popped back on as I was starting out of town and now it shows P2097. What is that and should I have it checked out first thing on Monday ? I'd really rather not be worrying about it on the road, but otoh, if it can wait, I'd rather do that til a week from Monday. Thanks for your answer.

Good evening, the code found p2097 is 1/2 O2 sensor rich(downstream- below the catalytic converter). Your previous code is related to the same o2 sensor. I would recommend replcaing the o2 sensor then go from there. If it returns then you will have to start testing the wiring. I would recommend changing the o2 sensor now if you are able to. It is simple to replace and easy to get to. The trip would be a good chance after the repair to see if it returns with the number of miles you would be driving.


It can have an effect on engine performance and fuel economy. So the sooner you replace it the better. I dont believe it will leave you stranded on the road anyway by any means so I wouldnt worry about that if you arent able to replace it right away before the trip. If you need more help or have more questions then let me know and I will help you further.

vipertech763 and 3 other Dodge Specialists are ready to help you
Yes there are more than one o2 sensor but your codes are directly related to the 1/2 o2 sensor so I recommend only replacing that sensor only.