P0129 Chevrolet Barometric Pressure Out Of Range Low
Possible causes
– Faulty Manifold Absolute Pressure (MAP) sensor
– Manifold Absolute Pressure (MAP) sensor harness open or shorted
– Manifold Absolute Pressure (MAP) sensor circuit poor electrical connection
– Manifold Absolute Pressure (MAP) sensor harness open or shorted
– Manifold Absolute Pressure (MAP) sensor circuit poor electrical connection
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P0129 Chevrolet Description
The Engine Control Module (ECM) has detected an out of range signal from the Manifold Absolute Pressure (MAP) sensor