P0247: Wastegate solenoid B not working correctly
Turbocharger wastegate solenoid B malfunction
Severity: Severity not verified — if the car runs badly, have it inspected
The sources read give the meaning and causes but do not say how urgent this code is.
P0247 in short
P0247 is a turbocharger wastegate fault code. The wastegate valve B circuit is reporting a malfunction, or the computer found a fault on solenoid B. Wiring, the solenoid itself and, rarely, the engine computer are the usual causes. The sources read do not rate its urgency, so have it scanned and checked.
The wastegate controls how much exhaust bypasses the turbo, which sets boost. The computer drives it through a solenoid (also called a regulating valve) and watches that circuit. P0247 is titled "Turbocharger wastegate solenoid B malfunction" by the Delaware DMV list and "Turbocharger (TC) wastegate regulating valve B circuit malfunction" by TroubleCodes.net.
TroubleCodes.net lists wiring, the wastegate valve and the engine computer as probable causes, and says it has no detailed technical guide for this code yet.
Most likely causes
These are general causes for this code across vehicles. None is specific to one make or model.
Cause 1: Wiring problem at the wastegate valve
Possible — needs testing- Why it ranks here
- TroubleCodes.net lists wiring first among the probable causes.
- What would change this
- Rises if damaged or corroded wiring is found. Falls if the wiring tests good.
Cause 2: Wastegate solenoid (B) failure
Common general cause- Why it ranks here
- The valve itself is named as a probable cause by TroubleCodes.net.
- What would change this
- Rises if the wiring is good and the valve resistance is off. Falls if the valve tests normal.
Cause 3: Engine computer fault
Possible — needs testing- Why it ranks here
- Listed as a probable cause but described as unlikely, so it ranks last.
- What would change this
- Rises only after wiring and valve both test good. Falls if either is faulty.
What to test first
Start at step 1. Each result tells you what it means and where to go next.
Step 1: Read the stored codes and inspect the wastegate solenoid B connector and wiring for damage, moisture or corrosion.
Warning:Keep hands and tools clear of the hot turbo and exhaust; let the engine cool first.
IfWiring or connector damage is found
It meansRepair it and retest.
IfWiring looks fine
It meansTest the solenoid.
Step 2: Test the wastegate solenoid and its circuit with a scan tool that can command it (bidirectional test), as TroubleCodes.net recommends.
Warning:Probing a live connector can short the circuit and damage the engine computer; a shop should do it.
IfThe solenoid fails the test
It meansReplace the solenoid.
IfSolenoid and wiring both test good
It meansSuspect the engine computer.
Symptoms
- Check engine light
Compare with: Check engine light with loss of power
How to fix
On your vehicle
We don't have reviewed vehicle-specific evidence for P0247 yet. The causes and tests above apply across vehicles.
Related codes
No curated relationships for P0247 yet.
Sources and review
- Last reviewed
- Written by
- Saurabh K.
- Editorial review
- Pending
- Technician review
- Technician review pending
This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error