PONTIAC GRAND AM SENSOR PROBLEM
2001 Pontiac Grand Am • 31,000 miles
Our code reader said the code was p0113. Where is that and what kind of actions will the car make with that code?
March 30, 2013.
March 30, 2013.
The Intake Air Temperature (IAT) sensor is a thermistor which measures the temperature of the air entering the engine. The Powertrain Control Module (PCM) applies 5 volts through a pull-up resistor. When the intake air is cold, the sensor resistance is high, and the PCM will monitor a high signal voltage on the IAT sensor signal circuit. As the intake air warm, the sensor resistance becomes lower, causing the PCM to monitor a lower voltage. If the PCM detects an excessively high IAT sensor signal voltage, a low temperature is indicated, and DTC P0113 will set.
CONDITIONS FOR RUNNING THE DTC
•DTCs P0101, P0102, P0103, P0117, P0118, P0125, P0128, P0502, P0503, P1114, or P1115 are not set.
•The vehicle speed is less than 56 km/h (35 mph) .
•The mass air flow is less than 12 g/s .
•The engine coolant temperature is more than 60°C (140°F) .
•The engine run time is more than 3 minutes .
CONDITIONS FOR SETTING THE DTC
•The IAT signal voltage indicates an intake air temperature that is less than -37°C (-35°F) .
•The above conditions are present for at least 20 seconds .
ACTION TAKEN WHEN THE DTC SETS
•The control module illuminates the Malfunction Indicator Lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
•The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.
CONDITIONS FOR CLEARING THE MIL/DTC
•The control module turns OFF the Malfunction Indicator Lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
•A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
•A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
•Use a scan tool in order to clear the MIL and the DTC.
Mar 31, 2013.
Mar 31, 2013.
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