P0113 — Intake Air Temperature Circuit High Input Bank 1

powertrain (engine/transmission)

Is it safe to drive?

Repair soon and drive cautiously P0113 often permits temporary operation, but a false high intake temperature can cause an incorrect air-fuel mixture, rough running, hesitation, elevated fuel trims, and possible stalling. Avoid extended driving if the engine runs unstable, and repair the circuit promptly.

Typical symptoms

  • The check engine light may illuminate with P0113 stored in the powertrain controller
  • A scan tool may show an implausibly high Bank 1 intake air temperature reading
  • The engine may idle roughly, hesitate, or stumble during acceleration
  • Cold starting may be noticeably difficult or inconsistent
  • Short-term or long-term fuel trims may become abnormally positive
  • Fuel economy may decline while the powertrain controller compensates for the false temperature signal

Common causes

  • An open or high-resistance connection in the Bank 1 intake air temperature sensor signal wire
  • A failed intake air temperature sensor with an internally open resistor element
  • Corrosion, bent pins, or water intrusion in the intake air temperature sensor connector
  • A high-resistance or open sensor ground circuit in the wiring harness
  • The sensor signal wire shorted to ignition or reference voltage
  • A less-common powertrain control module input or internal reference-circuit failure

How to diagnose with an OBD scanner

  1. Read P0113 and monitor live sensor data Connect an OBD2 scanner using an ELM327 adapter with AIScanAuto or another scan tool. Confirm stored and pending P0113 codes, then record live Bank 1 intake air temperature, engine RPM, coolant temperature, and fuel trims before clearing anything.
  2. Compare the reported temperature with ambient conditions Compare the scan-tool intake air temperature with the actual intake-air temperature. A reading near 190 F or 88 C on a cool engine, or a value far above the intake temperature, supports the P0113 high-input condition rather than a normal warm-up reading.
  3. Inspect the sensor and connector Locate the Bank 1 intake air temperature sensor in the intake manifold or intake duct. Disconnect the battery negative terminal before handling the connector, then inspect for corrosion, water, damaged terminals, loose plugs, and wiring chafing near moving components.
  4. Test the sensor and its circuits Using the vehicle wiring diagram and a digital multimeter, test the sensor resistance at a known temperature, verify sensor ground continuity, and confirm the powertrain control module supplies the specified reference voltage. Also check that the signal wire is not shorted to battery or ignition voltage.
  5. Repair and verify the P0113 condition Repair damaged wiring or terminals first. If the circuits test correctly, replace the intake air temperature sensor with the specified part, reconnect it, clear P0113, and repeat the live-data test. A sensor that still produces an impossible high reading requires further powertrain control module diagnosis.

Approximate repair cost

A typical independent-shop estimate for P0113 is about USD 130-450, including roughly USD 40-180 for an intake air temperature sensor and USD 90-250 for diagnosis, labor, or related wiring repairs. These figures are estimates and vary by region, vehicle access, and parts availability.

Common questions

Does P0113 mean the intake air temperature is actually too high?

Not necessarily. P0113 usually means the controller sees an abnormally high voltage from the Bank 1 intake air temperature circuit, which may result from an open wire or failed sensor rather than genuinely hot intake air.

Can I drive the vehicle with P0113 stored?

You can often drive cautiously while arranging repair, especially if the engine runs smoothly. Severe hesitation, stalling, or a flashing check engine light should be addressed immediately to avoid fuel damage or a loss of control.

Is the P0113 sensor the same as the coolant temperature sensor?

No. P0113 concerns the intake air temperature sensor and its wiring. The coolant sensor measures engine coolant temperature and normally reports a different system value, even though the powertrain controller uses both inputs.

Why would P0113 remain after replacing the intake air temperature sensor?

A replacement sensor may not correct P0113 if the connector, signal wire, sensor ground, or reference circuit is damaged. Confirm the live reading with a scanner and perform guided resistance and voltage tests before condemning the powertrain control module.

P0113 is an OBD2 diagnostic trouble code that points to a problem with the intake air temperature sensor circuit on bank 1 of your engine. Specifically, it indicates that the sensor is reporting a voltage input that the powertrain control module considers unreasonably high. The module watches this circuit constantly while the engine runs, comparing the actual temperature reading against a normal operating range. When the signal stays outside that range for more drive cycles than the calibration allows, the control unit stores P0113 and turns on the Check Engine light.

The intake air temperature sensor sits in the intake manifold or air stream and tells the ECU how hot the incoming air is. This information affects fuel mixture, ignition timing, and throttle response. When the sensor reads implausibly high or sends a signal that exceeds the expected voltage limits, the computer assumes something is wrong and defaults to a safe mode. Bank 1 refers to the engine bank containing cylinder 1, so you'll want to confirm which side that is for your specific vehicle before diving into repairs.

When the module sets P0113, it also captures freeze frame data — a snapshot of engine speed, load, temperature, and vehicle speed at the exact moment the fault was recorded. That snapshot is your best starting point because it tells you under what conditions the problem appeared.

Symptoms of P0113

P0113 affects throttle control and engine metering, so drivers typically notice one or more of the following:

  • Stalling or dying when slowing to a stop
  • Activation of limp-home mode with noticeably reduced engine power
  • Check Engine light illuminated on the dashboard
  • Unstable idle — the engine may race, stumble, or fluctuate
  • Sluggish or unresponsive throttle pedal
  • Inconsistent acceleration or hesitation under load

Common Causes

The most frequent culprits behind P0113 are the throttle body itself and the wiring feeding it. Problems tend to cluster around a few areas:

  • Dirty or carbon-fouled throttle body with a stuck or sluggish plate
  • Faulty throttle position sensor or accelerator pedal position sensor
  • Failed electronic throttle motor
  • Wiring damage, corroded connectors, or poor electrical contacts in the throttle circuit
  • Faulty intake air temperature sensor (sometimes bundled with the MAF or MAP sensor)

How to Diagnose P0113

A systematic approach keeps you from replacing good parts. Follow these steps in order:

  1. Hook up an OBD2 scanner and confirm P0113 is present in the stored codes. Record the freeze frame data — that log shows what the engine was doing when the failure occurred and guides the rest of your diagnosis.
  2. Pull all stored and pending codes. Related codes often point to the real source of the problem. Also search for technical service bulletins (TSB) for your make, model, and year — manufacturers sometimes publish known fixes or software updates for common P0xxx codes.
  3. Visually inspect the wiring harness and connectors in the throttle and intake air temperature circuit. Look for chafed wires, broken insulation, corrosion, and any connectors that are loose or water-damaged.
  4. Remove and inspect the throttle body. Carbon buildup can prevent the plate from closing fully or moving freely. Clean it with proper throttle body cleaner and verify smooth operation.
  5. Monitor live data on the scanner. Watch throttle position, MAF sensor output, and intake air temperature readings while commanding the throttle open and closed. Values should change smoothly without sudden jumps or flatlines.
  6. Clear the code and run the vehicle through a complete drive cycle — include the conditions recorded in the freeze frame. If P0113 comes back, the fault is confirmed and needs repair.

Repair Options

Address the inexpensive fixes before swapping expensive components:

  • Throttle body cleaning: $80–$200 — effective when carbon buildup is the issue
  • Throttle body assembly replacement: $250–$700 — necessary if the motor, sensor, or plate mechanism is internally damaged
  • MAF or MAP sensor replacement: $150–$400 — some vehicles bundle the intake air temperature function into the mass airflow sensor

Total Repair Cost

The total bill hinges on what actually failed. Parts plus labor at independent shop rates typically run $80 to $700 depending on the repair. Cleaning costs the least, while full throttle body replacement sits at the high end. A proper diagnosis before purchasing parts is worth the time because the cheapest fix is rarely a full assembly replacement.

Can You Drive with P0113?

Drive with caution. P0113 can trigger limp-home mode, which limits engine power to protect the drivetrain. This reduced-power state is enough to get you to a repair facility, but it is not ideal for extended highway driving. If the engine stalls repeatedly or the throttle pedal becomes unresponsive, stop driving immediately and have the vehicle towed.