Nissan Repair Questions? Ask a Mechanic for Answers ASAP
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These two errors are difficult to differentiate.
Does the car have a loss of power?
If so, then the flow controller on the high pressure fuel pump should be checked and the wiring harness to it should be checked.
If not, the O2 sensor should be replaced first.
We have two faults here, one of which is the main fault and one of the secondary faults. Here you can only try.
If there is no loss of power, you should start with the O2 sensor, because it is quite often defective.
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