What Kia codes (P0011, P0420, P0171, P0299, P0016, P0341) actually mean on Kia engines — the real cause, the common misdiagnosis, and the honest UK repair cost.
These are the OBD fault codes we see most often on Kia vehicles in the workshop, with the real cause on Kia engines rather than the generic textbook definition, plus the honest independent-garage cost.
Kia fault codes explained
- P0011 — VVT actuator over-advanced on Kia — same Theta II / Gamma engine concerns as Hyundai. Always check campaign coverage before paying. Typical UK cost £180–£600.
- P0420 — Catalyst efficiency on Kia — Theta II 1.6/2.0 GDI engines mirror the Hyundai issue. CRDi diesels typically suffer DPF blockage causing this code instead. Typical UK cost £180–£1300.
- P0171 — System lean on Kia — Gamma/Theta GDi intake carbon, identical story to Hyundai GDi engines. Typical UK cost £20–£550.
- P0299 — Turbo underboost on Kia — 1.6 CRDi U2 and 1.0/1.4 T-GDi VGT actuator or split charge pipes. Typical UK cost £180–£1200.
- P0016 — Crank/cam correlation Bank 1 on Kia — Theta II GDi chain/bearing and Kappa T-GDi OCV (Sportage/Ceed). Typical UK cost £180–£2400.
- P0341 — Camshaft position sensor performance on Kia — Theta II GDi and Gamma CMP sensor and OCV. Typical UK cost £100–£400.
Codes are generic across manufacturers, but the fix is not. The same code on a Kia usually points at a different component than it would on another make, which is why a make-specific diagnosis saves money before any parts are bought.