Failed wastegate solenoid 'B' (open or shorted coil); Damaged, corroded, or disconnected electrical connector at solenoid 'B'; Broken, chafed, or shorted wire in the solenoid control circuit; Faulty powertrain control module (PCM) driver for that circuit; Restricted or disconnected vacuum/boost hoses to the solenoid or wastegate actuator; Sticking or seized wastegate actuator or linkage on the turbocharger

DTC codes / P02xx · Fuel and air metering (injector circuits) / P0247

P0247Turbo/Super Charger Wastegate Solenoid 'B'

Q: What does code P0247 mean?

Turbo/Super Charger Wastegate Solenoid 'B'. P0247 indicates that the powertrain control module (PCM) has detected an electrical fault in the control circuit for wastegate solenoid 'B', which is the second wastegate solenoid on engines equipped with twin turbochargers. The PCM monitors the solenoid's command circuit for expected voltage or current and sets this code when the signal falls outside the manufacturer's specified range.

P0247 indicates that the powertrain control module (PCM) has detected an electrical fault in the control circuit for wastegate solenoid 'B', which is the second wastegate solenoid on engines equipped with twin turbochargers. The PCM monitors the solenoid's command circuit for expected voltage or current and sets this code when the signal falls outside the manufacturer's specified range.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering (injector circuits)

Symptoms you may notice

Illumination of the check engine light, often with no other noticeable symptoms
Reduced engine power or a limp-home mode, especially under heavy acceleration
Poor fuel economy or sluggish throttle response
Audible turbocharger whistle or whoosh that is louder or different than normal
Overboost or underboost conditions that may trigger additional codes

Common causes, most likely first

Failed wastegate solenoid 'B' (open or shorted coil)
Damaged, corroded, or disconnected electrical connector at solenoid 'B'
Broken, chafed, or shorted wire in the solenoid control circuit
Faulty powertrain control module (PCM) driver for that circuit
Restricted or disconnected vacuum/boost hoses to the solenoid or wastegate actuator
Sticking or seized wastegate actuator or linkage on the turbocharger

How to diagnose and fix it

Inspect the solenoid 'B' connector and wiring for corrosion, looseness, or damage; clean and secure as needed
Check vacuum/boost hoses for cracks, splits, or disconnection and repair or replace them
Measure the resistance of solenoid 'B' with a multimeter and compare to the manufacturer's specification
Test the control circuit for continuity, shorts to ground, and shorts to power using a wiring diagram
Command the solenoid on and off with a scan tool to verify operation and listen for clicking
Replace the wastegate solenoid 'B' if electrical tests indicate a failed coil or valve
If the circuit and solenoid test good, diagnose the PCM driver or internal fault per service information

Wastegate Solenoid B Diagnostics

A P0247 can be set by a simple unplugged connector that was disturbed during unrelated service, so always check connection integrity before condemning the solenoid.
On some vehicles, a faulty wastegate solenoid 'B' may cause no driveability symptoms at all, leading owners to ignore the code until a secondary overboost or underboost code appears.
The PCM may set P0247 even when the solenoid coil tests good, because the driver circuit inside the PCM can fail; a noid light or oscilloscope test at the PCM connector confirms driver operation.
Vacuum or boost leaks at the solenoid 'B' hoses can mimic an electrical failure by altering the solenoid's expected response, so pressure-test the system before replacing parts.
This code is specific to the control circuit, not the wastegate actuator itself; a stuck actuator will usually set a boost-related code rather than P0247.

Can I keep driving with P0247?

You can usually drive the vehicle with P0247, but avoid aggressive acceleration and towing until the fault is repaired, because the turbocharger may not regulate boost correctly and could cause engine damage or trigger limp mode.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.