Code Definition

P1113 — Intake Air Temperature Sensor Signal (Dynamic Chamber) Circuit

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

About P1113

P1113 is a manufacturer-specific powertrain diagnostic trouble code recorded for Mazda vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P1113 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.

P1113 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

DTC P1113 is a Mazda specific code indicating a problem with the Intake Air Temperature (IAT) sensor signal from the sensor mounted in the dynamic chamber of the variable intake system. The dynamic chamber is the plenum within Mazda's variable induction setup, and the IAT sensor there is a negative temperature coefficient thermistor that tells the Engine Control Module (ECM) the temperature of air entering the engine so it can trim fuel delivery and ignition timing. The ECM sets this code when the sensor signal is out of the expected range, erratic, or implausible for the engine operating cond...

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