EGR Backpressure Transducer: Description and Operation

PURPOSE/OPERATION





The Backpressure Transducer (BPT) is installed between the throttle body and the Exhaust Gas Recirculation (EGR) solenoid valve. The BPT, varying the throttle port vacuum that acts on the EGR valve according to the throttle opening angle and exhaust gas pressure controls the rate of exhaust gas flow to the EGR valve.