P0234 on Kia: How to Diagnose & Fix
Turbo/Supercharger Overboost Condition
1 Kia model · 1 documented issue · 1 critical
P0234 on Kia by model: symptoms, diagnosis and fix
NHTSA recall 24V169000 (Kia SC300) covers certain 2018-2023 Stinger vehicles with the 3.3L turbocharged engine. The left turbocharger oil-feed pipe and hose assembly can deteriorate and leak oil onto hot exhaust components, increasing fire risk.
Common Symptoms
- Burning-oil odor or smoke from the engine compartment
- Visible oil leakage near the left turbocharger
How to Fix
Check the VIN for recall 24V169000/SC300. If burning oil, smoke or active leakage appears, stop safely and arrange service. A Kia dealer replaces the left turbocharger oil-feed pipe and hose assembly free of charge. Do not infer P0234/P0299, turbocharger damage or a need for generic gaskets or a boost gauge from this recall.
Sources for this issue (1)
P0234 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0234 mean on a Kia?
P0234 stands for "Turbo/Supercharger Overboost Condition." P0234 means the engine computer detected an overboost condition — the turbocharger or supercharger produced more boost pressure than the system allows. The computer monitors manifold/boost pressure and compares it to a safe target; when boost exceeds the threshold (or rises too fast), it sets this code, often cutting power to protect the engine. Excess boost can stress pistons, gaskets, and other components, so the system typically enters a reduced-power 'limp' mode. It generally points to a stuck or malfunctioning boost-control component rather than an internal engine fault. On Kia it is documented across 1 model: Stinger.
What are the most common causes of P0234?
The most common causes of P0234 are: Stuck or faulty wastegate (mechanical or stuck closed), Faulty boost / wastegate control solenoid, Stuck or faulty turbocharger bypass / blow-off valve, Disconnected, cracked, or leaking boost control vacuum hoses, Faulty boost pressure (MAP) sensor giving false readings, Failed or stuck variable-vane (VGT) turbo mechanism, Wiring or connector fault in the boost control circuit. The specific cause varies by vehicle.
How much does it cost to fix P0234 on a Kia?
Repair costs vary widely with the root cause and Kia model; each issue on this page carries its own estimate where one is published.
Looking for P0234 on a different make?
View P0234 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.