Question about 1994 Nissan Maxima

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Im getting a code 51 from the on borad computer on

Im getting a code 51 from the on board computer on a 1994 nissan maxima,what could this be?

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Do you mean P0051??

If you do, then it's an issue with one of your O2 Sensors.

You may have a short in the heater circuit in the sensor
The O2 sensor heater has failed
The wires connecting the sensor are broken or frayed

Most likely you will need to replace the sensor.
The sensor is Bank 2 Sensor 1
Bank 2 means it is located opposite of where cylinder 1 is (not sure where cylinder 1 is on your car) and Sensor 1 will mean it's the sensor located before the catalytic converter

Posted on Sep 25, 2009


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