P2074 Code Manifold Absolute Pressure / Mass Air Flow Throttle

The P2074 code registers when the powertrain control module (PCM) detects signals from the manifold air pressure (MAP) or mass airflow (MAF) sensor that don't meet the expected values. The P2074 code can be caused by a faulty MAF, MAP, or throttle position sensor. The air cooler assembly or turbocharger could have also failed.. Diagnosing and repairing the P2074 code can be complex and should be done by a qualified mechanic. The mechanic may perform a visual inspection of the MAP sensor and its wiring, test the sensor's voltage readings, check for vacuum leaks, use a smoke machine to test for leaks in the vacuum system or check other related components.

Faulty Sensors: The triggering of the P2074 code can often be attributed to faulty sensors. Inspect the Manifold Absolute Pressure (MAP), Mass Air Flow (MAF), and Throttle Position (TPS) sensors for any signs of malfunction. Incorrect Sensor Readings: Incorrect sensor readings can also lead to the P2074 trouble code. Calibration errors or.. OBD-II Code P2074 is defined as a Manifold Absolute Pressure/Mass Air Flow - Throttle Position. The Mass Air Flow (MAF) Sensor or Manifold Air Pressure Sensor allows the engine computer (PCM) to calculate how much air is actually flowing through the engine. The PCM monitors the throttle position and compares the actual MAF reading to what the.