how do i fix the egr backpressure transducer . it turns on the service engine light but i cant find a replacement part for it

What is your question?

the egr system was replaced but the mechanic couldn't find the egr bpt to replace it and the code reads low pressure in the egr bpt

What makes this problem better or worse?

service engine light stays on

How long has your 2003 Nissan Frontier had this problem?

2 months