P2577 Buick Direct Ozone Reduction Catalyst Efficiency Below Threshold

P2578 Buick Turbocharger Speed Sensor Circuit

OBD Code:
System:
Subsystem:

P2578 Buick – (ASE)
Powertrain
Vehicle Speed Control, Idle Controls, and Auxiliary Inputs

Trouble Code Description: Turbocharger Speed Sensor Circuit

Location:
Analysis:

Possible Causes:

Circuit Issue

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