Flooring It and Going Nowhere Fast
You're trying to merge or pull out into traffic and your 2020 HR-V responds like it's thinking about whether to accelerate. The engine seems hesitant, power is weak, and you're questioning if this little crossover was always this slow. P0113 may explain the issue: the intake air temperature sensor is reading high.
What You're Noticing
- Sluggish acceleration from stops
- Engine feels underpowered
- Hesitation when pressing the gas
- Check engine light with P0113
- Possibly worse fuel economy
- May idle slightly rough
What P0113 Means
P0113 indicates the intake air temperature (IAT) sensor is reading higher than -38°F (-39°C)—basically the signal is at or near its maximum voltage. The computer interprets this as extremely cold air (which would be very dense) and adjusts fuel delivery accordingly.
Wait—cold air should help performance, right? Not when the reading is impossibly cold. The computer knows something's wrong and goes into a "safe" mode that reduces power.
Causes of P0113
Failed IAT Sensor
The sensor itself has failed, sending a high voltage signal regardless of actual temperature. Most common cause.
Wiring Problem
Open circuit, short to voltage, or damaged wiring can send incorrect signals. Check the harness between the sensor and ECU.
Connector Issues
Corrosion, bent pins, or a loose connection at the IAT sensor can cause high resistance and incorrect readings.
Air Filter or Intake Modification
Aftermarket air intakes or improperly installed air filters can affect IAT readings if they relocate or damage the sensor.
Finding the IAT Sensor
On the 2020 HR-V, the IAT sensor is typically integrated into the mass airflow (MAF) sensor, located in the intake tube between the air filter box and throttle body. Some vehicles have a separate IAT sensor.
Diagnosis Steps
- Check connector - Look for corrosion, bent pins, or loose connection
- Read IAT temperature - With a scan tool, compare IAT reading to ambient temperature. They should be close when the car has been sitting.
- Check wiring - Look for damaged or chafed wires in the harness
- Test sensor resistance - Compare to specification at known temperature
Repair Costs
- IAT sensor (if separate): $30 - $80
- MAF/IAT combo sensor: $100 - $250
- Wiring repair: $75 - $200
- Connector cleaning/repair: $50 - $100
Quick Fix Attempt
Before buying parts, try cleaning the connector and inspecting the wiring. Disconnect the battery, unplug the sensor connector, spray electrical contact cleaner inside, let dry, and reconnect. Sometimes it's just a connection issue.
Why Performance Suffers
When the computer sees an impossibly cold air reading, it knows something's wrong. Rather than trust false data, it reduces power and runs conservatively to protect the engine. Fixing the sensor restores normal operation.