P0354 on Kia: How to Diagnose & Fix
Ignition Coil D Primary/Secondary Circuit Malfunction
1 Kia model · 1 documented issue · $120-$600 repair
P0354 on Kia by model: symptoms, diagnosis and fix
Across both generations of Rio, owners frequently report ignition-related misfires caused by failing coil packs, deteriorated plug wires on earlier cars, or worn spark plugs. The problem typically shows up as rough idle, hesitation under load, flashing MIL, and poor fuel economy. It is common enough in owner complaints and repair forums to be considered a recurring Rio issue, especially as these cars age.
Common Symptoms
- check engine light
- flashing MIL
- rough idle
- hesitation on acceleration
- engine shaking
- poor fuel economy
How to Fix
Scan for cylinder-specific misfire codes, inspect plugs for wear or oil fouling, and test or swap coils to isolate the fault. On early models, replace aged plug wires along with plugs; on later coil-on-plug setups, replace the failed coil and inspect the connector for corrosion. If misfires persist, check for vacuum leaks and compression issues before replacing more parts.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- A-Premium APIC1312 ignition coil, plug and wire kitOEMA-Premium APIC1312 / PartsGeek 655-03080396
Replace diagnosed worn early-generation coil/wires and plugs as a matched service kit Fitment/availability: 2001-2002 Kia Rio 1.5L Base/Cinco/RX-V and 2003-2005 Rio 1.6L Base/Cinco/RX-V as listed; 5-blade early waste-spark branch only. N…
- Genuine Kia 27301-26640 ignition coilOEMKia 27301-26640
Confirm the 2005 body transition and VIN.
- Genuine Kia 18823-11101 spark plugOEMKia 18823-11101
Replace worn or fouled spark plugs as a four-plug set on the later engine branch Fitment/availability: 2006-2011 Kia Rio/Rio5 1.6L Alpha DOHC; sold individually, order four. Confirm VIN and service-manual plug specification/gap.
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Owner tips & cautions
- TipUse dielectric grease sparingly in coil boots and inspect for oil in plug wells before installing new parts.
P0354 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 P0354 mean on a Kia?
P0354 stands for "Ignition Coil D Primary/Secondary Circuit Malfunction." This is an ignition/engine code. The ignition coil boosts low battery voltage into the high-voltage spark that ignites the air-fuel mixture. P0354 means the engine computer detected a fault in the primary or secondary circuit of ignition coil 'D' — the coil isn't returning the proper signal when it's told to fire. This commonly produces a misfire, rough running, hesitation or reduced power, and ongoing misfires can damage the catalytic converter over time. On Kia it is documented across 1 model: Rio.
What are the most common causes of P0354?
The most common causes of P0354 are: Failed ignition coil 'D', Damaged wiring or corroded connector at the coil, Open or short in the coil primary/secondary circuit, Worn or fouled spark plug adding load to the coil, Poor power or ground supply to the coil, Faulty ignition driver in the ECM (less common). The specific cause varies by vehicle.
How much does it cost to fix P0354 on a Kia?
Published repair estimates on Kia range from $120 to $600 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for P0354 on a different make?
View P0354 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.