What Causes P2073 DTC on a 2011 Ford F-550 6.7L Diesel?
DTC P2073: Manifold Absolute Pressure/Mass Air Flow - Throttle Position Correlation at Idle I've been experiencing the P2073 diagnostic trouble code on my 2011 Ford F-550 6.7L diesel engine. We recently replaced the Mass Air Flow (MAF) sensor, but the code continues to appear intermittently. The P2073 code is triggered when the Powertrain Control Module (PCM) detects that the calculated air mass at idle is more than 15% above or below the calibrated threshold value. This discrepancy suggests an issue in the intake system or sensor calibration. Possible causes include: • Leaks or restrictions in the intake air system or charge air cooler (CAC) • Leaks or restrictions in the crankcase ventilation system • Damaged Mass Air Flow (MAF) or Intake Air Temperature (IAT) sensors • Sensor bias in MAF/IAT components • Faulty exhaust gas recirculation (EGR) valve Note: The vehicle is stock configuration, excluding the flatbed. No modifications have been made to the engine or intake system.
The truck is stock (excluding flatbed). I haven't worked with this specific code or engine, so here's the official manual description: Description: The Powertrain Control Module (PCM) continuously monitors the intake air system. If the PCM detects that the final air mass adaptation value at idle exceeds 15% above or below the calibrated threshold, DTC P2073 is set. Possible Causes: • Leaks or restrictions in the intake air system and charge air cooler (CAC) • Leaks or restrictions in the crankcase ventilation system • Damaged Mass Air Flow (MAF) or Intake Air Temperature (IAT) sensor • Sensor bias in MAF/IAT sensors • Faulty exhaust gas recirculation (EGR) valve