Technical Definition:
Exhaust Pressure (Sensor A) Circuit High
Trouble Code: P0473
Address: 0x0473
System: Powertrain
Subsystem: Auxiliary Emission Controls
Address: 0x0473
System: Powertrain
Subsystem: Auxiliary Emission Controls
Technical Description:
Possible Causes:
Possible Symptoms:
Exhaust Pressure Sensor High
Possible Solutions:
OBD-II Trouble Code Type:
Diagnostic Step:
Tech Notes:
– Faulty Exhaust Back Pressure Sensor
– Exhaust Back Pressure Sensor harness is open or shorted
– Exhaust Back Pressure Sensor circuit poor electrical connection