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Service bulletins for the 2018 Kia Niro

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

100 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Exhaust and emissions are shown. Show all

Bulletins, newest first
PS5932019-04-30. Service bulletin. ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. PITSTOP: MIL ON WITH DTC U029F00 - Some 2017-2019MY Niro (DE HEV) vehicles may have a malfunction indicator lamp (MIL) illumination with DTC U029F00 (Lost Communication with Evaporative Emission System Leak Detection Control Module ) active. Prior to following the standard diagnostic steps for the DTC as outlined in KGIS, on vehicles built before October 2018, the NVLD signal wire needs to be checked for insulation and/or core damage.
PS5542018-05-14. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. PITSTOP - DTC?S P0A0F AND P040400 AND/OR IMPROPER A/C OPERATION - When addressing a concern related to DTC?s P0A0F (Engine failed to start), P040400 (Exhaust Gas Recirculation Control Circuit Range/Performance), and/or improper A/C system operation, note that the cause may be related to a shorted A/C Pressure Transducer Wiring Harness (B) as a result of interference with the engine drive belt idler pulley, in vehicles produced prior to August 21, 2017. If this condition is found, the harness (A) should be repaired, re-routed and secured away from the pulley to prevent it from damage. Confirm all related components are functioning as designed.
TSBENG178_R12018-05-14. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. TSB - DATA COLLECTION: EXTRACT CALIFORNIA EMISSIONS DATA FROM ECU (DC18) - This bulletin has been revised to include additional information. This bulletin provides information related to extracting ?in use performance tracking? emissions data from the Engine Control Unit (ECU) of certain vehicles sold in California.
TSBENG1782018-02-12. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. TSB - DATA COLLECTION: EXTRACT CALIFORNIA EMISSIONS DATA FROM ECU (DC18) - This bulletin provides information related to extracting ?in use performance tracking? emissions data from the Engine Control Unit (ECU) of certain vehicles sold in California.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.