P0179 Buick Fuel Composition Sensor Circuit High Input

P0180 Buick Engine Fuel Temperature Sensor A Circuit

Possible causes
– Faulty Engine Fuel Temperature Sensor
– Engine Fuel Temperature Sensor harness is open or shorted
– Engine Fuel Temperature Sensor circuit poor electrical connection
What about the obd code?
An excessively high or low voltage is sent to Powertrain Control Module (PCM) by the Engine Fuel Temperature (EFT) Sensor.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P0180 Buick Description

The comprehensive component monitor (CCM) monitors the Engine Fuel Temperature (EFT) Sensor circuit to the Powertrain Control Module (PCM) for low and high voltage. If voltage were to fall below or exceed a calibrated limit and amount of time during testing, the test will fail. Open or short in harness. Low ambient temperature operation.

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