Question about 1994 Jeep Grand Cherokee
12 just means the system was reset recently 55 mean end of codes so don't worry about them 2 however code 51 is an oxygen sensor error (O2 Sensor) a bad or shorted O2 sensor can cause it to run very bad and get poor gas mileage.
Posted on Nov 10, 2010
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Posted on Jan 02, 2017
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