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engine light comes on and you speed up dont do that can damage vehicle---have trouble code read most auto stores offer this service for free --a flashing means misfire or problem that needs immediate attention
Well you would need to use a scanner to monitor the data coming from the sensor after the cat. Code 137 means the data voltage is too low or zero. The sensor generates ac voltage based on the amount of unburned oxygen in the exhaust. The actual problem could be an exhaust leak closer to the engine, or that new cat may not be up to oem standards.
ok this one is simple code ( 133 ) is ( 02 sensor circuit slow response) ( bank 1 sensor 1) and code ( 137 ) is ( 02 sensor low voltage ) ( bank 1 sensor 2 )
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