The P2073 trouble code indicates a correlation issue between the Manifold Absolute Pressure (MAP) sensor or Mass Air Flow (MAF) sensor and the throttle position sensor at idle.
P2073 Manifold Absolute Pressure/Mass Air Flow – Throttle Position Correlation at Idle
Code symptoms P2073.
1. Rough idling or unstable engine RPM at idle.
2. Engine hesitation or stalling when coming to a stop.
3. Reduced engine performance or power.
4. Check Engine Light (CEL) or Malfunction Indicator Lamp (MIL) illumination.
This code is common in brands such as:: Chevrolet, Renault, Ford, Toyota, Nissan, Mercedes Benz, Honda.
Causes of the code P2073.
1. Incorrect throttle position sensor calibration or adjustment.
2. Faulty MAP sensor or MAF sensor.
3. Vacuum leaks in the intake manifold or associated hoses.
4. Dirty or contaminated throttle body.
5. Wiring harness or connector issues affecting the MAP or MAF sensor or throttle position sensor circuit.
Code Solutions P2073.
1. Verify the proper calibration and adjustment of the throttle position sensor. Adjust or recalibrate as necessary.
2. Test the MAP sensor and MAF sensor for proper operation using a scan tool or multimeter. Replace any faulty sensors.
3. Inspect the intake manifold and associated vacuum hoses for leaks. Repair or replace any damaged components.
4. Clean the throttle body and idle air control valve to remove any carbon buildup or debris.
5. Check the wiring harness and connectors for signs of damage or corrosion. Repair or replace damaged components as needed.