Code Definition

P1103 — Manifold Absolute Pressure sensor EGR Mode 2

System: Powertrain  |  Type: Manufacturer-Specific  |  Make: Hyundai

About P1103

P1103 is a manufacturer-specific powertrain diagnostic trouble code recorded for Hyundai vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P1103 is stored, the module has detected a sensor-related fault — the reported value from the named sensor is out of spec.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

P1103 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

In Hyundai vehicles, the P1103 code relates to the Manifold Absolute Pressure (MAP) sensor as monitored during EGR Mode 2, one of the staged self test phases in which the Engine Control Module (ECM) commands a set EGR valve position and checks the manifold pressure response. The MAP sensor measures intake manifold pressure and is a primary input for fuel delivery, spark timing, and EGR flow control. This code sets when the MAP signal does not change as expected for the commanded EGR flow during Mode 2, meaning the measured pressure and the commanded EGR position disagree. Drivers may notice ro...

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