Service bulletins for the 2021 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.
75 on file from NHTSA, as of 2026-10-19.
About C1604 on the 2021 Kia Niro: what the code means, and the bulletins and recalls about the same components.
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Only bulletins with trouble code: C1604 are shown. Show all
| TSB_ELE231_R3 | 2021-12-23. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; FORWARD COLLISION AVOIDANCE; VEHICLE SPEED CONTROL; ELECTRICAL SYSTEM; LANE DEPARTURE. TECHNICAL SERVICE BULLETIN: FRONT VIEW CAMERA REPLACEMENT FOR DTC C160449 & C160649 - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information on the inspection and replacement of the front camera on some vehicles. Due to an internal control chip concern inside the camera, the vehicle may exhibit a Forward Collision Avoidance Assist Warning Lamp (A) and/or Master Warning Lamp (B) with C160449 and/or C160649 codes. Certain systems may become temporarily disabled during occurrences: Smart Cruise Control (SCC), Lane Keep Assistance (LKA), Lane Departure Warning (LDW), Forward Collision-Avoidance Assist (FCA), Forward Collision Warning (FCW) and/or Driver Attention Warning (DAW). |
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| TSB_ELE231_R2 | 2021-09-03. Service bulletin. ELECTRICAL SYSTEM; VEHICLE SPEED CONTROL; LANE DEPARTURE; FORWARD COLLISION AVOIDANCE; EQUIPMENT ADAPTIVE/MOBILITY. TECHNICAL SERVICE BULLETIN: FRONT VIEW CAMERA REPLACEMENT FOR DTC C160449 & C160649 - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information on the inspection and replacement of the front camera on some vehicles. Due to an internal control chip concern inside the camera, the vehicle may exhibit a Forward Collision Avoidance Assist Warning Lamp (A) and/or Master Warning Lamp (B) with C160449 and/or C160649 codes. Certain systems may become temporarily disabled during occurrences: Smart Cruise Control (SCC), Lane Keep Assistance (LKA), Lane Departure Warning (LDW), Forward Collision-Avoidance Assist (FCA), Forward Collision Warning (FCW) and/or Driver Attention Warning (DAW). |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.