P0047

Turbocharger/Supercharger Boost Control A Circuit Low

Turbo / boost control Generic OBD-II High

What it means

P0047 means the ECM detected a low-voltage (short-to-ground or open) condition in the "A" boost control circuit. This circuit drives the wastegate/boost control solenoid, so a fault limits boost and usually triggers reduced-power mode. The cause is electrical — solenoid, connector, or wiring — not a misfire, despite how some databases label it.

High

Can I keep driving? Yes, with reduced power — a boost-control circuit fault often triggers reduced-power or limp mode; drive gently until repaired.

Real-world scan data

Seen in

1,612

scans in the past year

Found in

0.2%

of scans

0.5%

of scans that found faults

Appears alongside · share of P0047 scans

P0101in 18.5% of scans

P0113in 18.3% of scans

P2426in 12.3% of scans

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

Common symptoms

What you'll notice

Check-engine light on
Reduced power, especially at higher speeds
Slow or flat acceleration
Possible reduced-power / limp mode

Common causes

Most likely first

Short-to-ground or open (low-voltage fault) in the boost control solenoid circuitLikely
Failed turbo wastegate / boost control solenoidCommon
Corroded or loose electrical connectorsCommon
Damaged wiring in the control circuitLess often
ECM control-circuit driver faultLess often

How to diagnose & fix

Work through it in order

Read freeze-frame data to confirm the operating conditions.
Inspect the boost control solenoid connector and wiring for shorts-to-ground or opens.
Measure the solenoid resistance against spec.
Verify power and ground at the solenoid connector.
Replace the boost control solenoid if faulty; suspect the ECM only after wiring is verified.

FAQ

Quick answers

Is it safe to drive with P0047?+

You can drive gently, but boost is limited and the car may be in limp mode. Repair it soon so you're not stuck with reduced power.

Can I just clear P0047?+

It returns until the low-voltage circuit fault or the solenoid is repaired.

Read & clear P0047 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX