P003A OBD-II Trouble Code: Turbocharger/Supercharger Boost Control "A" Position Exceeded Learning Limit

Schedule Check Engine Light is on Inspection
Service Area

$79.99 - $89.99

Price range for all vehicles
Average rating from 4,810 customers who received a Check Engine Light is on Inspection.

P002A trouble code definition

The P002A OBD-II trouble code indicates the Electronic Computer Module (ECM) has detected an issue in the turbocharger or supercharger system, specifically about readings being outside acceptable parameters in regards to the engine’s boost.

What the P002A code means

In the most basic sense, the registration of the P002A code means the ECM noted a misalignment in the boost control A within the engine’s turbocharging or supercharging system. Such a misalignment can cause the engine to rev up to such a degree that other components of the system may be affected or damaged, such as push rods or rockers, due to an improper range of motion.

What causes the P002A code?

When the ECM detects an improper range of motion within the turbo- or supercharger through the on-board computer circuitry, it registers the P002A code and turns on the Check Engine Light on the vehicle’s dashboard. It may also be accompanied by other OBD-II trouble codes, such as P2562.

What are the symptoms of the P002A code?

In addition to the P002A code triggering the Check Engine Light to come on, the vehicle may display other symptoms, such as:

How does a mechanic diagnose the P002A code?

The first step in diagnosing the cause of the P002A OBD-II trouble code is to verify its existence. This is done by connecting a specialized scan tool (more technologically advanced than those found in auto parts stores) and seeing if that fault code registers. Using the data collected by the scan tool, a trained mechanic can then interpret that data to narrow down the cause of the P002A code. Other tests, such as a manufacture pinpoint test or additional scans following the clearing of codes may also be necessary to gain insight into the nature of or severity of the issue.

Common mistakes when diagnosing the P002A code

When diagnosing the P002A OBD-II trouble code, the most common mistakes made by technicians are:

  • Not verifying the P002A code
  • Failing to perform a visual inspection of the turbocharger or supercharger
  • Forgetting to clear the P002A code after making repairs

How serious is the P002A code?

While a vehicle can still run once the P002A code has registered, the excessive range of motion of the vane within the turbo- or supercharger can ultimately harm other components, such as push rods or rockers. It is therefore inadvisable to continue driving a vehicle that has triggered the P002A code, and you should seek professional assistance in diagnosing and repairing the issue before the potential costs of the fix increase exponentially due to spreading damage.

What repairs can fix the P002A code?

After validating the P002A code with the proper scan tool, a mechanic may make the following repair(s):

  • Adjusting the vane within the turbocharger or supercharger
  • Replacing the turbocharger or supercharger

Additional comments for consideration regarding the P002A code

Any time an OBD-II fault code registers with the ECM, such as the P002A code, discovering the cause of the code and determining what repairs are necessary can take time - up to several hours. Multiple scans using a specialized scan tool may be in order along with other tests to be sure the proper course of action is taken. Also, after any repairs have been completed or parts replaced, the mechanic should test drive the vehicle and perform one last scan to be sure the issue has been resolved.

Need help with a P002A code?

YourMechanic is happy to connect you with a mobile mechanic to diagnose and repair problems with your vehicle registering the P002A code and can even come to your home or office to do the job. Get a quote and make an appointment online or speak with a service advisor at 1-800-701-6220.


Next Step

Schedule Check Engine Light is on Inspection

The most popular service booked by readers of this article is Check Engine Light is on Inspection. Yourmechanic’s technicians bring the dealership to you by performing this job at your home or office 7 days a week between 7AM-9PM. We currently cover over 10k cities and have 100k+ 5-star reviews... LEARN MORE

SEE PRICING & SCHEDULING

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

Recent Check Engine Light is on Inspection reviews

Excellent Rating


YourMechanic Check Engine Light is on Inspection Service

Average Rating

4.8/5

Number of Reviews

4,810

Rating Summary
4,424
187
47
28
124
4,424
187
47
28
124

Joel

19 years of experience
741 reviews
Joel
19 years of experience
Acura RL - Check Engine Light is on - Jacksonville, Florida
very knowledgeable and precise. able to fix electrical issues in my car. Right on time for the appointment.
Toyota Highlander - Check Engine Light is on - Jacksonville, Florida
Joel was very efficient with inspecting my vehicle. He told the issues with the vehicle and gave great advice on what needed to be done for the repairs. I will definitely use this service again.

Matthew

31 years of experience
639 reviews
Matthew
31 years of experience
Jeep Patriot - Check Engine Light is on - Norfolk, Virginia
Matthew was on time which was a relief, he is very knowledgeable and was easy to understand what was wrong and what was being done. I am recommending to friends and family due to the great experience Matthew gave me. Extremely professional 10/10
Mercedes-Benz E320 - Check Engine Light is on - Williamsburg, Virginia
MATT WAS AMAZING! HE EXPLAINTED EVERYTHING SO WELL! HIS EXPERTISE AS A MECHANIC IS EVIDENT AND I HIGHLY RECOMMEND HIM.

Michael

14 years of experience
501 reviews
Michael
14 years of experience
Ford Mustang - Check Engine Light is on - Decatur, Georgia
Michael was extremely courteous and knowledgable, he diagnosed and solved my issue in record time. Will definitely look to him next time I'm in need of a mechanic!
Chrysler Sebring - Check Engine Light is on - Atlanta, Georgia
Michael arrived on time and was efficient. He also explained the issues my car was having in an understandable way, and gave me good advice on what to do moving forward with the repairs.

Christopher

15 years of experience
41 reviews
Christopher
15 years of experience
Honda Accord - Check Engine Light is on - Fairburn, Georgia
Christopher was excellent! He explained everything in detail to make sure I understood. He was professional and provided me with the next course of actions to resolve my care issues. I'm glad he was sent to service my car.

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