AutoCodes – GMC – P0047 GMC

P0047 GMC Code - Turbocharger Boost Control Solenoid Control Circuit Low Voltage

Quick Answer

The positions of the turbocharger vanes are controlled by the Engine Control Module (ECM). Common causes include Faulty Turbocharger Control Solenoid Valve, Turbocharger Control Solenoid Valve harness is open or shorted, Turbocharger Control Solenoid Valve circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0047 GMC indicates Turbocharger Boost Control Solenoid Control Circuit Low Voltage.
Common causes: Common causes include Faulty Turbocharger Control Solenoid Valve, Turbocharger Control Solenoid Valve harness is open or shorted, Turbocharger Control Solenoid Valve circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 1,098

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 20, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0047 GMC Description

The positions of the turbocharger vanes are controlled by the Engine Control Module (ECM). The ECM utilizes a turbocharger vane control solenoid to control the turbocharger vanes and a turbocharger vane position sensor to verify the position of the vane. The ECM will vary the boost depending upon the load requirements of the engine. The vane control solenoid has a high control circuit and a low control circuit. The ECM uses a pulse width modulation on both circuits to control the solenoid. The Diagnostic Trouble Code (DTC) will set if the ECM detects that the commanded state of the driver and the actual state of the control circuits do NOT match or if the condition exists for equal to or greater than 4 seconds.

OBDII Code P0047 GMC - Turbocharger Boost Control Solenoid Control Circuit Low Voltage - AutoCodes.com — P0047 GMC Code - Turbocharger Boost Control Solenoid Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0047 GMC?

Faulty Turbocharger Control Solenoid Valve
Turbocharger Control Solenoid Valve harness is open or shorted
Turbocharger Control Solenoid Valve circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0047 GMC?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0047 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0047 GMC Code

1. What are the common symptoms of OBDII code P0047 GMC?

The common symptoms of code P0047 GMC include reduced engine performance, decreased fuel efficiency, and potentially a check engine light on the dashboard.

2. What can cause the Turbocharger Boost Control Solenoid Control Circuit Low Voltage code P0047 GMC?

The P0047 code in a GMC can be triggered by issues such as a faulty turbocharger boost control solenoid, damaged wiring or connectors in the control circuit, or a problem with the engine control module (ECM).

3. How can I diagnose the cause of OBDII code P0047 GMC?

To diagnose code P0047 GMC, you can start by visually inspecting the wiring and connectors related to the turbocharger boost control solenoid. Using a multimeter, check for continuity and proper voltage in the circuit. You may also need to test the solenoid itself for proper operation.

4. Can I drive my GMC with OBDII code P0047?

It is not recommended to drive your GMC with code P0047 present, as it can lead to further damage to the turbocharger system and affect engine performance. It is best to address the issue promptly.

5. What are the repair options for OBDII code P0047 GMC?

Repair options for P0047 GMC may include replacing the turbocharger boost control solenoid, repairing or replacing damaged wiring or connectors, or reprogramming the ECM if necessary. It's advisable to consult a professional mechanic for an accurate diagnosis and appropriate repair.

6. Is it safe to reset the OBDII code P0047 GMC using a diagnostic tool?

Resetting the P0047 code using a diagnostic tool is safe as a temporary solution to turn off the check engine light. However, the underlying issue causing the code should still be addressed to prevent further problems.

7. How much does it typically cost to repair OBDII code P0047 GMC?

The cost of repairing code P0047 GMC can vary depending on the specific cause of the issue, the parts needed for replacement, and labor costs. On average, the repair can range from $200 to $500, but it's best to get a quote from a trusted mechanic.

8. Can a clogged air filter cause OBDII code P0047 GMC?

While a clogged air filter may not directly cause code P0047 GMC, it can indirectly affect the performance of the turbocharger system and lead to related issues. It's recommended to regularly replace air filters to maintain optimal engine performance.

9. Will driving at high altitudes trigger OBDII code P0047 GMC?

Driving at high altitudes may not directly trigger code P0047 GMC, but it can exacerbate existing issues with the turbocharger system due to the increased demand for performance at higher elevations. It's essential to ensure the turbocharger components are functioning properly.

10. How long does it take to repair OBDII code P0047 GMC?

The repair time for code P0047 GMC can vary depending on the complexity of the issue and the availability of parts. In general, a skilled mechanic can typically diagnose and repair the problem within a few hours to a day, but it's best to confirm the timeline with the service provider.