What is your question?
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What is your question?
codes p0134 and p0138 came up and check engine light I replace the two sensors and cleard the codes with scanner but still the check engine light comes on what to do
1 Reply
The codes indicate little or no voltage on one 02 sensor circuit and stuck higher than normal voltage on the other 02 sensor. The codes do not automatically mean that the sensors are bad. There are many engine functions that can cause this and also PCM circuit pinpoint tests may need to be performed.