P259D

Excessive Time To Enter Closed Loop Turbocharger B Boost Control

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$22–167 (est.)

Symptoms

Reduced engine power
Uneven engine operation
Increased throttle response time
Check Engine Light Is On
Unstable boost pressure

Causes

Seized or worn turbine blades
Wastegate fault
Problems with the turbine vacuum control system
Contaminated or damaged control solenoid valves
Open or short circuit in control circuit

How to Fix

Check the mechanical condition of the turbocharger
Diagnose the operation of the bypass valve
Check vacuum hoses for leaks
Test control solenoid valves
Check the integrity of wiring and connectors

Related codes

P259C P259E P2563