Skip the auto shop - Our mechanics make house calls

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

Check Engine Light

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 :

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

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.


Post a question and get free advice from our certified mechanics.


More related articles

How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
P0222 OBD-II Trouble Code: Throttle/Pedal Position Switch/Sensor B Circuit Low Input
P0222 code definition Throttle/Pedal Position Switch/Sensor B Circuit Low Input What the P0222 code means The manufacturer specifies a range of acceptable voltage to be produced from the throttle position...
How to Transfer a Car Title in Idaho
In order to prove ownership of a car, you must have the title. However, when a car is sold, given away or inherited, the title needs...

Related questions

Q: Tranny troubles

You need to have the transmission leak from the bell housing fixed. The fluid leaking is causing the transmission shift problem. The trouble code P2271 indicates that the O2 sensor after the converter shorted rich. This may happen if transmission...

Q: CEL purge valve manifold

Hello there, thank you for asking about your 2011 Mercedes-Benz C63 AMG. If you are suspicious, you may want to hire another facility for a second opinion. Each time the Check Engine Light was illuminated, there's a good chance the...

Q: Problem with Check Engine light in my dashboard.

Hi and thanks for your question. The code P0139 means that the secondary oxygen sensor on bank 1 (the sensor after the catalytic converter) is not damaged, but rather the engine air fuel ratio is not being adjusted by the...