P2074 Buick Manifold Absolute Pressure/Mass Air Flow – Throttle Position Correlation at Higher Load
Possible causes
– Large vacuum leak on the engine
– Faulty Manifold Pressure (MAP) sensor
– Faulty Throttle Position Sensor (TPS)
– Faulty Engine Control Module (ECM)
– Faulty Manifold Pressure (MAP) sensor
– Faulty Throttle Position Sensor (TPS)
– Faulty Engine Control Module (ECM)
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P2074 Buick Description
The Engine Control Module (ECM) has detected a failed signal correlation between the Manifold Pressure (MAP) and Throttle Position Sensor (TPS)
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