200SX L4-1998cc 2.0L DOHC MFI (SR20DE) (1995)
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EGR Backpressure Transducer: Description and Operation
EGRC-BPT VALVE FUNCTION (DTC: P0402)
The EGRC-BPT valve monitors exhaust pressure to activate the diaphragm, controlling throttle body vacuum applied to the Exhaust Gas
Recirculation (EGR) valve. In other words, recirculated exhaust gas is controlled in response to positioning of the EGR valve or to engine
operation.