Question about 1996 Dodge Caravan

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1994 dodge caravan, 2wd, 3.0 engine

My van recently started acting funny. Going down the road my speedometer suddenly dropped to 0 and the engine started dieing, but then speedometer started working again and the engine picked back up. It did that a few times. I did the trouble shooting code for it and it came up 12, 37, and 21. Can you tell me what these codes mean and what may be wrong with my van?

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  • Anonymous Feb 15, 2009

    I have a 1994 Dodge Gran Caravan and nothing on the dashboard works (rpm, mileage etc..)

  • Anonymous Mar 22, 2014

    what could be causing this

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12 - battery recently disconnected. 21 - Oxygen sensor signal doesn't change (stays at 4.3 - 4.5 V) possibly bad O2 sensor 37 - Transmission temp. sensor reading low.
There are many options that can cause these problems, but loose wiring to the battery and a weak alternator would be one of the first things to check.

Posted on Sep 21, 2008

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