P0247 Code Meaning and Next Steps

First checks take 10 minutes for basic checks. No special tools are usually needed for the first checks.

Can you keep driving?

Stop driving if any of these apply

!The vehicle suddenly runs much worse, loses power sharply, or the check-engine light starts flashing.
!There is a strong smell, smoke, overheating, or any symptom that suggests a real-time safety problem rather than a stored code alone.

If the light is steady and the vehicle still drives normally: Often yes for a short time, but it should not be ignored if drivability changes are obvious.

What to check first

Step-by-step checks

1
Safety first
Let the engine cool before touching turbo, exhaust, or charge-air parts
2
Free - no tools
Gently inspect the connector and harness for a dropout when moved by hand
3
Basic tool needed
Check whether the fault appears more on bumps, hot days, or after the engine has been running a while
4
Basic tool needed
Inspect the hoses and valve body for signs of oil contamination or loose fitment
5
Basic tool needed
If live data is available, watch the commanded state while reproducing the fault
6
Basic tool needed
Verify the fuse and power feed because an intermittent supply issue can mimic a bad solenoid

If the code returns

-If moving the harness triggers the fault, repair the wiring before replacing the valve.
-If heat makes the fault worse, suspect the solenoid or connector more strongly.
-If the vacuum side also changes with vibration, inspect both paths together instead of only the electrical side.

Background

What this code means

P0247 is a generic OBD-II code for an intermittent boost control solenoid circuit fault.

That usually means the ECU sees the solenoid working sometimes and failing at other times. Heat, vibration, loose terminals, or a solenoid that is starting to fade are common reasons.

Diagnosis

Common causes

Most common

Loose connector or wiring

A connector that shifts with vibration can make the signal come and go.

Common

Solenoid beginning to fail

An internal fault can appear only after heat soak or under load.

Common

Vacuum hose or routing issue

A weak hose can make the boost control system behave inconsistently.

Possible

Power-feed intermittency

A fuse, relay, or supply issue can drop the valve out unexpectedly.

Avoid these mistakes

What not to do

xDo not replace the turbo first if the issue is obviously coming and going with harness movement.
xDo not ignore an intermittent fault just because it clears temporarily after a restart.

Parts

Parts that may need replacing

PartTypical costNotes

Boost control solenoid$40-$180Most relevant when the valve fails intermittently on its own.

Connector or wiring repair$20-$160Often the best fix when vibration or heat makes the circuit drop out.

Vacuum hose set$10-$90Useful when the mechanical side is part of the intermittent fault.

Related OBD codes

P0243

P0243 means the boost control solenoid circuit has a fault.

P0244

P0244 means the boost control solenoid is not performing within the expected range.

P0246

P0246 means the boost control solenoid circuit is reading too high.

Source notes

Generic OBD-II (SAE J1979 / ISO 15031-5). P0247 was seeded from dtcdb and then expanded around intermittent boost control solenoid faults, especially loose connectors, heat soak, and vibration-related failures.

This guide is written as a generic multi-make reference, so bulletin history, sensor locations, and repair order can still change by manufacturer and engine family.

This is generic OBD-II guidance and should not override vehicle-specific service information. Exact diagnosis and repair steps vary by make, engine family, and model year.

Last reviewed: 2026-04-10

Reference: Open reference

P0247 - The Boost Control Solenoid Signal Is Intermittent or Unstable