DTC P0113: Intake Air Temperature (IAT) Sensor Circuit, High Input: Condition
WARNING: This page is about a different car, the 2002 Mazda 626. However, it is still accessible from the selected car via links, so may be relevant.
DTC is set when Powertrain Control Module (PCM) detects input voltage from IAT sensor is more than 4.8 volts or the difference between IAT sensor and Engine Coolant Temperature (ECT) sensor is more than 32.2°C. Temperatures are measured by subtracting ECT sensor reading from IAT sensor reading. This is a continuous monitor. MIL is illuminated when PCM detects malfunction during 2 consecutive drive cycles. Possible causes are:
- IAT sensor malfunction.
- ECT sensor malfunction.
- Open or short circuit between IAT sensor and PCM.
- PCM malfunction.