P0047 OBD-II Trouble Code: Turbo/Super Charger Boost Control Solenoid Circuit Low

Our certified mechanics come to you · Get a fair and transparent estimate upfront

Red-stars EXCELLENT RATING ON

Cost of diagnosing the P0047 code

P0047 is a diagnostic trouble code (DTC) for "Turbo/Super Charger Boost Control Solenoid Circuit Low". 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.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$20.00
Toyota$20.00
BMW$20.00
SCHEDULE P0047 DIAGNOSTIC Get a fair and transparent estimate upfront

P0047 code definition

Turbo/Super Charger Boost Control Solenoid Circuit Low

What the P0047 code means

This code has varied definitions as provided by the manufacturer. The code means that the Engine Control Unit (ECU) has detected an out of range or abnormal reading of low operation in the turbocharger or supercharger boost control solenoid circuit. This code is related to circuit A as an area of the boost solenoid system circuit, as opposed to a particular malfunction or component.

What causes the P0047 code?

  • Vacuum leaks on the intake manifold or boost control

  • A dirty or restrictive air cleaner

  • The waste gate is either stuck open or closed

  • A plugged or leaking intercooler

  • Loose connections or bad gasket between the exhaust manifold and the turbocharger flange

  • A leaking connection between the turbocharger and the air intake pipe

  • A bad boost pressure sensor

  • Shorted or open wiring in the boost sensor circuit

  • Loose, corroded, or disconnected electrical connectors in the boost sensor 5-volt reference circuit

  • Turbo charger failure (usually caused by internal oil leaks and oil supply problems which can cause bearing failure and blade damage)

What are some of the symptoms of P0047 code?

  • Low or no boost and a loss of power during acceleration

  • Engine idle normal, but acceleration affected

  • Check Engine Light illumination once ECM has detected solenoid circuit low current condition (indicates open circuit)

How does a mechanic diagnose the P0047 code?

  • Scanning and verifying the code
  • Resetting the fault codes and performing a road test.

If the P0047 code returns, the following test procedure is necessary:

  • Inspecting for vacuum leaks

  • Inspecting the turbo or super charger system for loose connections, including hoses and lines being cracked or damaged

  • Checking the wiring on the boost sensor and related wiring for loose connections, damaged wiring, or faulty sensor

  • Examining the boost pressure during operation and driving for a normal range of 9 to 14 PSI pressure and insuring it is not erratic or too low

  • Inspecting the turbo charger for damaged blades, wobbly shaft rotation, worn bearings, oil leaks into turbo boost side, and correct control valve or waste gate operation

Common mistakes when diagnosing the P0047 code

Do not replace any component assuming it is bad without carefully inspecting the system. Mechanics have reported that failure to flush all debris and obstructions from the turbocharger oiling system can lead to repeated turbo failure related to the bearings on the turbocharger shaft. Replacing the turbocharger without complete testing of the by-pass valve or waste gate function and electrical circuitry is also the cause of common misdiagnosis.

How serious is the P0047 code?

This code is very serious and is usually preceded by the engine warning light coming on. It should be diagnosed as soon as possible to prevent engine internal damage or turbocharger failure. Minimize your driving until the problem can be repaired.

If the vehicle operates very poorly, do not drive it further. The vehicle can run roughly, backfire, have rich or lean fuel consumption, and operate in over or under boost conditions.

Often times, if the engine warning light comes on immediately at start up, the OBD- II system can be reset and the vehicle will operate normally.

What repairs can fix the P0047 code?

There are many causes for this code that relate to leaks and pressure loss in the system, but usually they related to hose, clamp and connection failures due to improper installation or simply age. Many times, an intake hose to the intercooler, or the intercooler itself, may have a leak, and would require replacement.

You can use a spray carburetor cleaner with a long plastic hose to spray directly at connections and hoses to see if the engine operation changes or improves. Modern vehicles are very complicated, so the using the hose with the carburetor cleaner allows for easy access to check specific areas for leaks. I have found cracked intake hoses to be a problem, usually on the bottom or out of site, that can cause intermittent problems only noted under load.

Additional comments for consideration regarding the P0047 code.

Many vehicles with mileage over 100,000 have momentary sensor problems that usually occur during start up or prolonged stress situations on the drive train.

If the engine warning light comes on and the vehicle seems to be operating normally, the OBD-II system can be reset using the scanner, and the problem may not reoccur. This is why it is important to verify the fault code and reset it before doing any repairs.

Need help with a P0047 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.

P0047
trouble codes
Check Engine Light

No more waiting rooms! Our mechanics will come to you to diagnose and fix the P0047 code.

SCHEDULE P0047 DIAGNOSTIC
Get a $20 credit for the follow-up repair

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

5,079

Rating Summary
4,679
195
48
27
130
4,679
195
48
27
130

Robert

39 years of experience
15 reviews
Robert
39 years of experience
Jaguar S-Type - Check Engine Light is on - Scottsdale, Arizona
Bob is very thorough and an all-around professional. I'll be booking his service for both my cars as often as work is needed.

Eduardo

18 years of experience
353 reviews
Eduardo
18 years of experience
Dodge Dakota - Check Engine Light is on - Stafford, Texas
Great guy very knowledgeable and very professional one of the best mechanics I've ever met. He explained what was going on and let me know my options. Will be asking for him again!

Michael

15 years of experience
524 reviews
Michael
15 years of experience
Toyota Corolla - Check Engine Light is on - Atlanta, Georgia
Michael was a great mechanic, and nice guy. He was knowledgeable and offered examples of my current problems while also sharing solutions.

Juan

8 years of experience
53 reviews
Juan
8 years of experience
Honda Pilot - Check Engine Light is on - Chapel Hill, North Carolina
Great job, explained the situation to me and told me to try to get the dealer to repair it under warranty. I certainly will but if they give me a song and dance I will be back and have Juan do it in a heartbeat. I’m well pleased.


More related articles

P2011 OBD-II Trouble Code: Intake Manifold Runner Control Circuit Open Bank 2
P2011 P2011 trouble code definition The P2011 diagnostic trouble code indicates that the intake manifold runner control (IMRC) circuit in open in bank 2. Related Trouble Codes: P2004 OBD-II Trouble Code: Intake Manifold Runner Ctrl Stuck Open Bank 1...
Symptoms of a Bad or Failing Electronic Brake Control Module (EBCM)
Common signs include the ABS or Check Engine Lights coming on and the ABS or traction control systems malfunctioning.
P2167 OBD-II Trouble Code: Throttle/Pedal Position Sensor E Maximum Stop Performance
P2167 P2167 code definition Throttle/Pedal Position Sensor E Maximum Stop Performance What the P2167 code means The P2167 code is a general OBD-II diagnostic trouble code (DTC) that indicates a fault with the throttle / pedal position sensor E maximum...

Related questions

Car won't go over 35 mph

Computer controlled engines can put the car into a “limp” mode when certain codes are set. This is usually to prevent further damage. It’s hard to say what the problem is without knowing what code is set. If the engine...

After putting gas in my 2006 Ford Explorer, my car started sputtering and my Emissions light came on. Help!

Hello, thank you for writing in. Several things may be effecting your fuel system. While all gasoline has certain regulations to uphold to, not all gas is created equal, and the classic "bad gas" situation does happen. Secondly if the...

Trouble accelerating when the fuel gauge says 1/2.

Hi there. If there is a evaporative leak on the fuel system, then there could be a problem with the fuel delivery when the system has too much vapors. Check the purge valve on the fuel charcoal canister and see...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 · hi@yourmechanic.com