P0408 Buick Exhaust Gas Recirculation Sensor B Circuit High

P0409 Buick Exhaust Gas Recirculation (EGR) (Sensor A) Circuit Malfunction

OBD Code:
System:
Subsystem:

P0409 Buick – (ASE)
Powertrain
Auxiliary Emission Controls

Trouble Code Description: Exhaust Gas Recirculation (EGR) (Sensor A) Circuit Malfunction

Location:
Analysis:

Possible Causes:

Sensor A
Circuit Malfunction

Tech description:

Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave – Buick Encore – Buick Rainier – Buick Rendezvous – Buick Terraza – Buick Riviera