P0243 OBD-II Trouble Code: Turbocharger Wastegate Solenoid A Malfunction

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Cost of diagnosing the P0243 code

P0243 is a diagnostic trouble code (DTC) for "Turbocharger Wastegate Solenoid A Malfunction". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

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P0243 code definition

Turbocharger Wastegate Solenoid A Malfunction

What the P0243 code means

P0243 is a generic OBD-II code indicating that the Engine Control Module (ECM) detected the turbocharger wastegate solenoid has an open or short circuit.

What causes the P0243 code?

  • The turbocharger wastegate solenoid is shorted or has an open in the solenoid.

  • The solenoid connector is corroded, causing an open circuit.

  • The wiring in the solenoid circuit is shorted to power or ground, or open circuit from a broken wire or connector.

What are the symptoms of the P0243 code?

  • The Check Engine Light is illuminated and the code is set in memory.

  • The engine turbo boost may not be able to be controlled properly and may underboost the engine.

  • The engine may lack power during acceleration if the wastegate solenoid is failing to control the correct amount of boost pressure.

How does a mechanic diagnose the P0243 code?

  • Scans codes and documents the freeze frame data in order to verify the problem
  • Clears the codes to verify whether the concern comes back
  • Checks the operation of the wastegate solenoid
  • Checks the solenoid resistance to see if it is within specifications
  • Checks the solenoid connector for loose or corroded pins
  • Checks the wiring from the solenoid to the ECM for shorts or open circuits

Common mistakes when diagnosing the P0243 code

Follow these simple guidelines to prevent misdiagnosis:

  • Check the wastegate solenoid voltage supply fuse for vehicle battery voltage.
  • Check electrical connections at the solenoid for corrosion on pins.

How serious is the P0243 code?

The turbo boost pressure in the intake is controlled with the wastegate and wastegate solenoid on most vehicles with a turbocharger. If the solenoid is malfunctioning, then the ECM cannot enable and control the turbo boost, often resulting in a lack of power.

What repairs can fix the P0243 code?

  • Replacing a wastegate solenoid with an open circuit
  • Repairing or replacing a solenoid wiring connection with corrosion in the pins

Additional comments for consideration regarding the P0243 code

Code P0243 is triggered by the ECM indicating a malfunction condition in the wastegate solenoid circuit; the ECM sees an open or short in the circuit. The most common failure is the wastegate solenoid itself.

Need help with a P0243 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.

Check Engine Light
P0243
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JOHNNY

33 years of experience
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JOHNNY
33 years of experience
BMW 325Ci - Check Engine Light is on - Sacramento, California
He was great explained everything to me and have now booked him for another appointment. Thanks johnny.

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41 years of experience
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Ronald
41 years of experience
Mercedes-Benz C300 - Check Engine Light is on - Spring, Texas
Mister Ron was very nice and took time out to explain any concerns I might have about my car. He also made sure he communicated with me when he was on his way, once he was outside, and when we was done working on my car. I appreciate that considering I have a newborn that I had to look after.

Ronald

41 years of experience
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Ronald
41 years of experience
Ram 1500 - Check Engine Light is on - Spring, Texas
Extremely satisfied with the service, he was able to come out and diagnose almost immediately. We purchased the parts, he came back installed them and been running great since. Would definitely recommend him and will not hesitate to call again if needed.

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Dodge Neon - Check Engine Light is on - Tempe, Arizona
I truly enjoy Scott as he has done work for me in the past. Scott is very friendly, knowledgeable, and a true professional! I highly recommend him.


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