P1113
ChryslerIntake Air Temperature Sensor Circuit Open or Shorted (Chrysler specific)
Low SeverityThis code indicates an electrical issue within the Intake Air Temperature (IAT) sensor circuit, meaning the engine computer is not receiving accurate temperature readings. This can lead to incorrect fuel mixture calculations, potentially affecting engine performance and fuel efficiency.
⚠️ Before You Begin (Safety First)
Always allow the engine to cool completely before working on engine components. Disconnect the negative battery terminal before performing any electrical repairs to prevent accidental shorts or injury.
Common Symptoms
- Check Engine Light illuminated
- Decreased fuel economy
- Rough idle or poor engine performance
- Difficulty starting
- Engine hesitation or stalling
Common Causes
- Faulty Intake Air Temperature (IAT) sensor
- Open or short circuit in the IAT sensor wiring harness
- Corroded or loose electrical connectors at the IAT sensor
- Damaged Powertrain Control Module (PCM) (less common)
Frequently reported on: Chrysler 300 (2005-2010), Dodge Grand Caravan (2008-2015), Jeep Grand Cherokee (2007-2010), Dodge Ram 1500 (2009-2012)
Diagnostic Steps
- Locate the Intake Air Temperature (IAT) sensor. It is typically found in the intake manifold, air intake duct, or air filter housing.
- Visually inspect the IAT sensor and its wiring harness for any signs of damage, fraying, corrosion, or loose connections.
- Disconnect the electrical connector from the IAT sensor.
- Using a multimeter, test the resistance of the IAT sensor at various temperatures (if possible, compare to specifications in a service manual). An open circuit or very high resistance at normal operating temperature usually indicates a faulty sensor.
- Test for voltage at the IAT sensor harness connector (usually a 5-volt reference signal).
- If the sensor tests faulty, replace it with a new one. Ensure the new sensor is specific to your vehicle make and model.
- Reconnect the electrical connector and clear the P1113 code using an OBD-II scanner.
- Test drive the vehicle to confirm the repair.
👨🔧 When to Call a Professional
If after inspecting the sensor and wiring, the problem persists, or if you are uncomfortable diagnosing electrical issues, it is best to consult a certified mechanic to further troubleshoot the IAT sensor circuit or PCM.
Commonly Asked Questions
What does P1113 specifically mean for my Chrysler?
For Chrysler vehicles, P1113 indicates an open or short circuit in the Intake Air Temperature (IAT) sensor circuit, meaning the engine computer isn't getting a proper signal from the sensor.
Can I drive with a P1113 code?
While you might be able to drive, it's not recommended for extended periods. The incorrect air temperature readings can lead to poor fuel economy, increased emissions, and potentially damage other engine components over time.
Where is the IAT sensor located on my Chrysler?
The location can vary, but it's typically found in the air intake ducting, the air filter housing, or sometimes directly in the intake manifold. Consult your vehicle's service manual for the exact location.
Do I need special tools to replace the IAT sensor?
Usually, only basic hand tools like a screwdriver or a wrench are needed to replace the IAT sensor. A multimeter is helpful for testing the sensor and wiring.
After replacing the IAT sensor, the Check Engine Light is still on. What should I do?
After replacement, you need to clear the P1113 code using an OBD-II scanner. If the light returns, there might be another issue in the wiring harness, the electrical connector, or less commonly, the PCM itself.