Skip the auto shop - Our mechanics make house calls

P2018 OBD-II Trouble Code: Throttle Actuator Control Module Performance

Check Engine Light

P2108 code definition

Throttle actuator control module performance

What the P2108 code means

This trouble code indicates that the powertrain control module has detected a malfunction with the throttle body control motor or module. This code is only found on vehicles that have an electronic throttle body.

What are the causes of the P2108 code?

Some potential causes of this trouble code would include:

  • The throttle body motor has stopped functioning
  • The throttle control module has started malfunctioning
  • The throttle position sensor no longer operates properly

What are the symptoms of the P2108 code?

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

  • The engine may not start or have trouble starting.

  • The engine may accelerate poorly or not accelerate at all.

  • The engine may idle incorrectly.

  • The engine may go into a fail-safe mode which reduces engine power and in some cases will disable the engine completely.

  • The Check Engine Light will be illuminated.

How does a mechanic diagnose the P2108 code?

A mechanic may begin diagnosing this trouble code by removing anything necessary to access the throttle body, throttle position sensor, and throttle body control module.

Once these items are accessible, the mechanic would then reference the manufacturer’s service information to decide how to test the throttle body motor, throttle position sensor, and throttle body control module.

When these tests have been carried out, the mechanic would note their findings and relay them over to the customer to make a repair decision.

Common mistakes when diagnosing the P2108 code

Sometimes mechanics can spend hours looking for the throttle position sensor. If this sensor is difficult to find under the hood, remember that sometimes this sensor can actually be a pedal position sensor and may be located in the driver floor area. Keeping this in mind can save a lot of time if the sensor is not on the throttle body.

How serious is the P2108 code?

This code is very serious as it can affect the way the engine performs. With a throttle that is not working properly, there is no way for the engine can perform properly. I would advise having this trouble code diagnosed and repaired as soon as possible because this trouble code can prevent your vehicle from operating at all.

What repairs can fix the P2108 code?

Repairs that can fix this trouble code would include:

Additional comments regarding the P2108 code

Never try to open an electronic throttle body manually. This includes using your hands or any other tool to open the throttle body by force. This will only cause more damage to the throttle system than before. If the throttle motor was not bad before, it very well could go bad after doing something like that.

Need help with a P2108 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
Icon-warranty_badge-02

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

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.

GET A QUOTE

More related articles

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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
The Traveler’s Guide to Driving in Malaysia
CraigBurrows / Shutterstock.com Malaysia is a popular destination for many tourists today. The country has amazing sights and attractions that you will want to explore....


Related questions

Q: Do I need to repair or replace my ECM?

You can get an ECM-related code for a number of different reasons. It can be something as simple as a voltage loss from a bad battery connection, or it may need a new ECM. I usually check the codes and...

Q: If you replace both engine and transmission and still have reduced engine power, what do you do

The first thing to do is to have the computer system scanned and codes logged. Then clear the codes and road test to see if problem and check engine light returns. If it does then retest the system for codes...

Q: My truck turns over but won't start.

When a truck won't start, it's usually going to be an ignition or fuel system-related malfunction. The fact that your gas gauge was "ticking" a bit may be an indicator that an electrical problem exists, causing the ignition system to...