What Does P1113 Mean?
P1113 indicates a fault in the Intake Air Temperature sensor circuit associated with the dynamic intake chamber. This is the same system as P1110, monitoring a secondary IAT sensor in the variable-length intake manifold. The ECM uses this temperature reading to optimize variable intake runner valve timing and fuel delivery for the dynamic chamber air charge. A circuit fault disrupts these calculations.
Common Causes
32%
Dynamic chamber IAT sensor failed open or shorted
25%
Broken or corroded wiring at the dynamic chamber sensor connector
18%
Moisture contamination in the intake manifold affecting sensor or connector
13%
ECM secondary IAT input circuit fault
12%
Shared sensor ground circuit with high resistance
Diagnostic Steps
1
Step 1: Read the dynamic chamber IAT sensor value via live data. A reading of -40°F suggests an open circuit; a reading above 280°F with a cold engine suggests a short to ground.
2
Step 2: Locate the dynamic chamber IAT sensor in the variable intake manifold assembly. Disconnect and measure resistance — expect approximately 2,000–3,000 ohms at room temperature.
3
Step 3: Check for 5V reference and ground at the sensor connector. If reference is present but ground is missing, trace the ground circuit back to the ECM splice or grounding point.
4
Step 4: Inspect the wiring harness between the sensor and ECM for damage, particularly where it passes through or near the intake manifold gasket area.
5
Step 5: Replace the dynamic chamber IAT sensor if resistance testing confirms it is out of range. Clear codes and verify proper temperature readings across operating conditions.
Estimated Repair Cost
$40 - $220
Parts + labor, varies by vehicle and location
P1113 indicates a fault in the Intake Air Temperature sensor circuit associated with the dynamic intake chamber. This is the same system as P1110, monitoring a secondary IAT sensor in the variable-length intake manifold. The ECM uses this temperature reading to optimize variable intake runner valve ...
The most common cause of P1113 (Intake Air Temperature Sensor Signal (Dynamic Chamber) Circuit) is: Dynamic chamber IAT sensor failed open or shorted
Typical repair costs for P1113 range from $40 to $220, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Minimal safety risk. The engine will default to conservative intake tuning, resulting in slightly reduced performance and possibly higher emissions. No driveability hazards expected.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1113 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Powertrain
System
Engine Management / Variable Intake System
Difficulty
Type
Manufacturer
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
