01 P0031 H02S heater control circuit low (Bank 1 sensor 1) • 02 Why Wrong Donut Tire's Position Could Cost You Thousands in… • 03 What Does It Mean If a Diesel Engine Throws White Smoke? • 04 The Real Reason SUVs Are Dominating the Market • 05 Front Wheel Vibration at High Speed: Troubleshooting and Fi… • 06 The Owner Who Drove One Car 500,000 Miles Answers The Quest… • 07 The Hidden Tech Inside Modern Cars Most Drivers Don’t Under… • 08 What Happens If You Shift to First Gear at High Speed? • 09 Why The Traction Control Light Comes On During Normal Drivi… • 10 From Tires to Driveshafts: An Expert Explains Why Your Car … •

DTC codes / Nissan codes / P1244

P1244 · NissanClosed Throttle Position Insufficient

P1244 on Nissan vehicles means the engine control module (ECM) has detected that the closed throttle position signal is insufficient during deceleration or idle conditions. The ECM expects a specific voltage or switch state from the throttle position sensor (TPS) when the accelerator pedal is released, and the signal it receives does not meet that expectation, indicating a fault in the closed throttle detection circuit or its adjustment.

SystemPowertrain
Code typeNissan specific
SeverityMedium
Fix difficultyIntermediate
AreaFuel and air metering (injector circuits)

Symptoms you may notice

  • Illumination of the check engine light, often with no other noticeable symptoms
  • Unstable or fluctuating idle speed, sometimes surging or dipping below normal
  • Hesitation or stumble when accelerating from a stop
  • Poor fuel economy or rich-running condition due to incorrect throttle position reporting
  • In rare cases, the engine may stall when coming to a stop or during deceleration
  • Transmission may shift harshly or hold gears longer than usual because throttle position affects shift scheduling

Common causes, most likely first

  1. Throttle position sensor (TPS) out of adjustment or faulty, not returning a valid closed-throttle voltage
  2. Dirty or carbon-fouled throttle body preventing the throttle plate from fully closing
  3. Wiring damage or poor connection at the TPS connector or between the TPS and ECM
  4. Failed closed throttle position switch integrated into the TPS assembly (on older Nissan designs)
  5. ECM software calibration issue or faulty ECM, though this is less common
  6. Mechanical binding in the accelerator pedal linkage or cruise control cable holding the throttle slightly open

How to diagnose and fix it

  1. Connect a scan tool and read live data for throttle position voltage and closed throttle status while releasing the accelerator pedal to confirm the signal does not drop to the expected value.
  2. Inspect the throttle body bore and throttle plate for carbon buildup; clean with throttle body cleaner and a soft brush, then recheck closed throttle voltage.
  3. Check the TPS connector for corrosion, loose pins, or damaged wiring; repair or repin as needed and clear the code to see if it returns.
  4. Measure TPS reference voltage, signal voltage, and ground at the sensor with a multimeter, comparing to Nissan specifications for closed throttle.
  5. If the TPS is adjustable, loosen its mounting screws and rotate it slightly to achieve the specified closed throttle voltage, then tighten and recheck.
  6. Replace the TPS if cleaning and adjustment do not restore a correct closed throttle signal, then perform a throttle position relearn procedure if required.
  7. After repairs, clear the diagnostic trouble code (DTC), perform a road test with several deceleration events, and verify the code does not reset.

Why a clean throttle body often fixes P1244

  • Carbon buildup on the throttle plate is a leading cause of P1244 on high-mileage Nissan engines because the plate cannot seat fully, leaving the TPS signal just above the closed-throttle threshold.
  • A TPS that reads correctly at wide-open throttle can still be faulty at the closed position, so testing only the full-sweep voltage can miss the problem.
  • On some Nissan models, the closed throttle position is learned by the ECM, and disconnecting the battery or replacing the throttle body without a relearn can set P1244 even when all components are good.
  • A misadjusted or sticking cruise control cable can hold the throttle slightly open and trigger P1244 without any TPS electrical fault.
  • P1244 is sometimes stored alongside idle air control or mass air flow codes, and replacing those parts without addressing the throttle plate closure will not resolve the root cause.

Can I keep driving with P1244?

You can generally continue driving with P1244, but avoid aggressive acceleration and be alert for stalling when coming to a stop. If the engine idles erratically or stalls frequently, have the vehicle inspected promptly to prevent unsafe driving conditions.

Tools that help

Tools we recommend are in the Auto Veteran shop on Amazon. As an Amazon Associate we earn from qualifying purchases.

Guidance is general and written for Nissan vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.

Running on fumes Free guides aren't free to make. Top up the tank. Any amount, one time. Fuel the Garage