P047D Code: Meaning, Causes, and Symptoms | OBD2 Codes

P047D – Exhaust Pressure Sensor ‘B’ Circuit High


P047D Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


P047D Possible Causes


Faulty Exhaust Back Pressure Sensor ‘B’,Exhaust Back Pressure Sensor ‘B’ harness is open or shorted,Exhaust Back Pressure Sensor ‘B’ circuit poor electrical connection


P047D Description


The Exhaust Back Pressure (EBP) sensor is a variable capacitance sensor that, when supplied with a 5-volt reference signal from the Engine Control Module (ECM), produces a linear analog voltage signal that indicates pressure. The EBP sensor’s primary function is to measure exhaust back pressure so that the ECM can control the exhaust back pressure regulator (EPR) when needed.