P2073 Fault Code

Manifold Absolute Pressure/Mass Air Flow Throttle Position Correlation at Idle

• What does that mean?
• Symptoms
• Causes
• Solutions

The P2073 code indicates a correlation issue between the manifold absolute pressure (MAP), mass air flow (MAF), and throttle position sensor (TPS) readings while the engine is idling. This code is common in vehicles that rely on electronically controlled throttle systems and can result in poor engine performance and increased emissions.

What are the symptoms of the P2073 code?

• Rough idling or stalling during idle
• Decreased fuel efficiency
• Hesitation during acceleration
• Check Engine Light (CEL) illuminated
• Poor throttle response

What causes the P2073 code?

• Vacuum leaks in the intake system
• Faulty MAP sensor
• Defective MAF sensor
• Malfunctioning throttle position sensor (TPS)
• Issues within the electronic throttle control system
• Engine computer (ECM) software errors

How to fix P2073?

• Inspect and repair any vacuum leaks in the intake system
• Test and, if necessary, replace the MAP sensor
• Check the MAF sensor for proper operation and replace as needed
• Verify the functionality of the throttle position sensor and replace if faulty
• Update or recalibrate the ECM if it is determined to be software related