P2073 OBD-II Trouble Code: Manifold Absolute Pressure/ Mass Air Flow - Throttle Position Correlation at Idle

P2073 code definition

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

What the P2073 code means

This trouble code indicates that the reference voltages of the manifold absolute pressure, mass air flow, and throttle position sensors vary by an amount that exceeds the manufacturer’s threshold of acceptance.

What are the causes of the P2073 code?

Some potential causes of this trouble code may include:

• The manifold absolute pressure or mass air flow sensor could be faulty.

• The throttle position sensor could be misaligned or faulty.

• The wiring or connectors that are associated with the manifold absolute pressure or mass air flow sensors could be damaged.

• The air filter could be extremely dirty.

• The powertrain control module could be malfunctioning.

• A vacuum leak may exist between the air cleaner box and the throttle body.

What are the symptoms of the P2073 code?

Symptoms of this trouble code that the driver may experience would include:

• Very weak acceleration
• Decreased fuel mileage
• A Check Engine Light

How does a mechanic diagnose the P2073 code?

A mechanic may begin diagnosing this trouble code by first inspecting the wiring and connectors that are associated with the manifold absolute pressure and mass air flow sensors for damages. Then the mechanic would test the sensors themselves for proper function using the manufacturer’s suggested procedure. Next, the mechanic would check the throttle position sensor for proper function and alignment while ensuring that no vacuum leaks exist and the air filter is clean. Finally, the powertrain control module would be tested. After all of these tests are performed, the mechanic would then relay their findings over to the customer to make a repair decision.

Common mistakes when diagnosing the P2073 code

A common mistake when diagnosing this trouble code would be to replace the manifold absolute pressure sensor and the mass air flow sensor without testing anything. This is a very bad mistake as this code could be caused by something other than either one of these sensors. It is a good idea to make sure your trouble codes get diagnosed by a qualified technician to reduce wasted time and money.

How serious is the P2073 code?

This code would be considered serious because it can cause drivability issues. Any issue that can cause the vehicle not to accelerate properly should be diagnosed and repaired as soon as possible. These types of problems lead to potential breakdowns.

What repairs can fix the P2073 code?

Repairs that can fix this trouble code would consist of :

• Replacing the manifold absolute pressure sensor

• Replacing the mass air flow sensor

• Realigning or replacing the throttle position sensor

• Repairing a vacuum leak

• Replacing the air filter

• Repairing or replacing wiring that is associated with the manifold absolute pressure or mass air flow sensors

Additional comments regarding the P2073 code

Regular maintenance of your vehicle can prevent trouble codes such as this one. Make sure that your air filter gets replaced annually for best results.

Need help with a P2073 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230