Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2006 Mazda 6 MazdaspeedFACTORY OEM SERVICE PROCEDURE

DTC P0113: Notes

DTC P0113 DETECTION CONDITION AND POSSIBLE CAUSES

DTC P0113

IAT circuit high input

DETECTION CONDITION

The PCM monitors the IAT sensor signal. If the PCM detected IAT sensor voltage above 4.9 V , the PCM determines that the IAT sensor circuit has a malfunction.

Diagnostic support note

This is a continuous monitor (CCM).
MIL illuminates if the PCM detects the above malfunction condition during first drive cycle.
FREEZE FRAME DATA is available.
DTCs are stored in the PCM memory.

POSSIBLE CAUSE

IAT sensor malfunction
Open circuit between MAF/IAT sensor terminal D and PCM terminal 2V
Short to the power supply between MAF/IAT sensor terminal D and PCM terminal 2V
Open circuit between MAF/IAT sensor terminal E and PCM terminal 2H
Poor connection at the MAF/IAT sensor or the PCM connector.
PCM malfunction

Courtesy of MAZDA MOTORS CORP.

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.