P256D Buick Engine Idle Speed Selector Sensor / Switch Circuit High

P256E Buick Engine Idle Speed Selector Sensor / Switch Circuit Intermittent / Erratic

OBD Code:
System:
Subsystem:

P256E Buick – (ASE)
Powertrain
Vehicle Speed Control, Idle Controls, and Auxiliary Inputs

Trouble Code Description: Engine Idle Speed Selector Sensor / Switch Circuit Intermittent / Erratic

Location:
Analysis:

Possible Causes:

Periodically Unstable Circuit

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