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DTC 3: Map Sensor (Electrical)
If self-diagnosis Check Engine light indicates code 3, an electrical problem may exist in the Manifold Absolute Pressure (MAP) Sensor system. The MAP sensor converts manifold absolute pressure into electrical signals and inputs the ECU. See Fig 1
-Fig 3
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Fig 1: MAP Sensor Circuit Diagnostic Flowchart (1 Of 3)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 2: MAP Sensor Circuit Diagnostic Flowchart (2 Of 3)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 3: MAP Sensor Circuit Diagnostic Flowchart (3 Of 3)