P1194 Buick Limp Home – TPS2 Position Malfunction
Possible causes
– Faulty Electronic Throttle System (ETS) Motor
– Faulty Electronic Throttle System (ETS)
– Electronic Throttle System(ETS)unit
– Electronic Throttle System(ETS) harness is open or shorted
– Electronic Throttle System(ETS) circuit poor electrical connection
– Faulty Electronic Throttle System (ETS)
– Electronic Throttle System(ETS)unit
– Electronic Throttle System(ETS) harness is open or shorted
– Electronic Throttle System(ETS) circuit poor electrical connection
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
– Engine Limp Mode Fail-Safe Mode)
– Engine Limp Mode Fail-Safe Mode)
P1194 Buick Description
The Electronic Throttle System (ETS) consists of ETS unit, ETS-motor, Accelerator Position Sensor (APS),Throttle Position Sensor (TPS) and Limp home valve.
Among above-mentioned parts, Limp home valve is attached under the throttle body and helps air to flow from the outside through this valve to the engine combustion chamber to prevent the vehicle from engine stall when Powertrain Control Module (PCM) detects ETS system malfunction.
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