Mitsubishi Montero owners have reported 2 problems related to emission control (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Mitsubishi Montero based on all problems reported for the Montero.
Pcm reprogramming for mil on/dtc po125. Incorrect pcm software parameters cause the mil("service engine soon) light to come on and diagnostic trouble code po125 to test to set. To eliminate this condition, reprograming the pcm is needed. After the reprograming the pcm, oxygen sensors on "2001 models only" need to be replaced and not covered by warranty. Oxygen sensors need to be replaced to meet new parameters, not because the sensors are bad. Mitsubishi states these modiflcations have been approved as appropriate by epa and carb. Thanks in advance for your help. Robert s duke.
See
all problems of the 2001 Mitsubishi Montero
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There were three manufacturer's recalls. It has been two years since they were issued, and manufacturer hasn't complied with them up to this date.
See
all problems of the 1996 Mitsubishi Montero
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