[SOLVED] P138D Code: Turbocharger/Supercharger Boost Control ‘a’ – High Temperature Fix

If you’ve noticed the engine light on your car’s dashboard, it could be a sign of trouble. One possible fault code that could trigger this warning is P138D. This code indicates a problem with the TurbochargerSupercharger Boost Control ‘A’.

The cause could be a faulty control, an open or shorted harness, or a poor electrical connection.

To fix this issue, start by visually inspecting the wiring harness and connectors.

Look for any damage or corrosion.

Additionally, check for broken, bent, pushed out, or corroded pins in the connectors. This repair is important to ensure optimal engine performance. While the repair time is estimated at 1.0, it’s crucial to address this issue promptly to prevent further damage.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level10.0 (Out of 10)

When the engine light is on or the service engine soon warning light is illuminated, it could be a sign of the p138d fault code.

  • The symptoms of the automobile fault code p138d include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

INNOVA 5210
Get an OBD Scanner for accurate, Your car-specific Error Diagnosis
  • Pinpoints your car-specific issues, giving accurate diagnostics for your exact make and model.
  • Works anywhere, even with limited connectivity, making it highly versatile.
  • Provides detailed insights into real-time performance for your exact make and model, beyond generic online explanations.
  • Tracks past issues of your vehicle, helping you spot recurring problems and monitor long-term performance, which online resources can’t offer.
  • Detects potential issues early, helping avoid costly repairs instead of just addressing current problems.
  • Regular checks support efficiency and emissions standards, potentially increasing resale value—hard to gauge with online info alone.
Buying through our links may earn us commission.

The automobile fault code p138d can be caused by a faulty TurbochargerSupercharger Boost Control ‘A’, an open or shorted harness, or a poor electrical connection in the circuit.

  • The fault code P138D can be caused by a faulty Turbocharger/Supercharger Boost Control ‘A’, an open or shorted harness for the Turbocharger/Supercharger Boost Control ‘A’, or a poor electrical connection in the Turbocharger/Supercharger Boost Control ‘A’ circuit.

To fix the automobile fault code p138d, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p138d, you need to follow these steps: 1.
  • Check the possible causes mentioned above.
  • 2.
  • Visually inspect the wiring harness and connectors related to the fault code.
  • 3.
  • Look for any damaged components.
  • 4.
  • Check for broken, bent, pushed out, or corroded pins in the connectors.
  • 5.
  • Repairing this fault code is estimated to take approximately 1.0 hour.

The factors influencing the cost of diagnosing and fixing the automobile fault code p138d are the estimated repair time of 1.0 hour and the hourly rate charged by auto repair shops, which typically ranges between $75 and $150.

The P138D fault code is related to the TurbochargerSupercharger Boost Control ‘A’ in the Powertrain Control Module (PCM).

This code is triggered when the boost control is not operating within the factory specifications. Specifically, it indicates that the temperature of the TurbochargerSupercharger Boost Control ‘A’ is too high. When this fault code appears, it means that the PCM has detected that the temperature of the boost control system is exceeding the recommended levels.

This can lead to performance issues and potential damage to the turbocharger or supercharger.

It is important to address this issue promptly to prevent further complications and ensure optimal engine performance. A qualified technician should diagnose and repair the underlying cause of the high temperature to resolve the P138D fault code.

What are the possible causes for the automobile fault code p138d?

If you see the engine light on or the service engine soon warning light, the fault code P138D could be the culprit. This code is often caused by a faulty Turbocharger/Supercharger Boost Control ‘A’, an open or shorted harness, or a poor electrical connection in the Turbocharger/Supercharger Boost Control ‘A’ circuit. To fix this issue, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins. Don’t forget to check the possible causes listed above for a more comprehensive solution.

How can I visually inspect the wiring harness and connectors related to the Turbocharger/Supercharger Boost Control ‘A’?

To visually inspect the wiring harness and connectors related to the Turbocharger/Supercharger Boost Control ‘A’, start by checking for the symptom of the Engine Light ON or Service Engine Soon Warning Light. The cause could be a faulty Turbocharger/Supercharger Boost Control ‘A’, an open or shorted harness, or a poor electrical connection in the circuit. To fix this issue, visually inspect the wiring harness and connectors for any damaged components. Look out for broken, bent, pushed out, or corroded pins in the connectors. This will help identify and resolve the problem effectively.

What should I look for when checking for damaged components or corroded connector’s pins in order to fix the fault code p138d?

When troubleshooting the fault code p138d, start by visually inspecting the wiring harness and connectors related to the Turbocharger/Supercharger Boost Control ‘A’. Look for any damaged components and check for broken, bent, pushed out, or corroded connector’s pins. These issues can cause poor electrical connections and lead to the engine light being on. By addressing these potential problems, you can fix the fault code and ensure optimal performance of your vehicle.

p138d error fault code explained

If you’re seeing the Engine Light ON or the Service Engine Soon Warning Light, the p138d fault code might be the culprit. This code is usually caused by a faulty TurbochargerSupercharger Boost Control ‘A’ or issues with the related wiring harness and connectors. To fix it, visually inspect the wiring harness and connectors for any damage, and check for broken, bent, pushed out, or corroded connector pins.

Scroll to Top