P1123 Buick Long Term Fuel Trim Adjustment Bank 1 System Too Rich

P1124 Buick Throttle Control Motor Relay Circuit Short

Possible causes
– Fualty Throttle Control Motor relay
– Throttle Control Motor relay harness is open or shorted
– Throttle Control Motor relay circuit poor electrical connection
What about the obd code?
Engine Control Module (ECM) detect the throttle control motor relay is stuck ON.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1124 Buick Description

Power supply for the throttle control motor is provided to the Engine Control Module (ECM) via throttle control motor relay. The throttle control motor relay is ON/OFF controlled by the ECM. When the ignition switch is turned ON, the ECM sends an ON signal to throttle control motor relay and battery voltage is provided to the ECM. When the ignition switch is turned OFF, the ECM sends an OFF signal to throttle control motor relay and battery voltage is not provided to the ECM.

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