P0354 on Toyota: How to Diagnose & Fix
Ignition Coil D Primary/Secondary Circuit Malfunction
1 Toyota model · 1 documented issue · $60-$350 repair
P0354 on Toyota by model: symptoms, diagnosis and fix
The individual coil-on-plug ignition coils fail from age and heat cycling on high-mileage Corollas, causing a cylinder misfire. This sets P0351-P0354 (coil circuit) and/or P0300-P0304 (misfire). OEM coil PN 90919-02239 is the common part for 2000-2008 1ZZ-FE cars. A failing coil produces rough idle, a flashing check engine light under load, and a raw-fuel smell; a chronic misfire can also foul the catalytic converter.
Common Symptoms
- Rough idle and shaking
- Flashing check engine light under acceleration
- Loss of power / hesitation
- Raw fuel smell from exhaust
How to Fix
Identify the misfiring cylinder from the codes and swap that coil to a neighboring cylinder to confirm the fault follows the coil. Replace the failed coil (and inspect/replace worn spark plugs as a set on high-mileage cars). OEM 1ZZ-FE coil PN 90919-02239 (~$40-70 each); Denso 673-1303 and other quality aftermarket units cross-reference. Use OEM/Denso-grade coils, as cheap coils commonly re-fail. Clear codes after repair.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Toyota 90919-02262 genuine direct ignition coil
single confirmed failed 1ZZ-FE ignition coil Fitment/availability: 1999-2008 Toyota Corolla 1ZZ-FE/selected catalog branch; use here for the issue's 2000-2008 1ZZ-FE and confirm VIN; supersedes 90919-02239 Fitment/availability: Ships in …
- Toyota 90080-91184 genuine spark plug
condition- or schedule-based 1ZZ-FE plug set accompanying confirmed ignition diagnosis Fitment/availability: 1999-2008 Toyota Corolla catalog branch including 1ZZ-FE; quantity four when plugs are due, worn, fouled or damaged; confirm VIN…
- Toyota 90919-02258 genuine ignition-coil assembly
single confirmed failed 2ZR-FE ignition coil Fitment/availability: 2009-2019 Toyota Corolla catalog branch including 2ZR-FE; use here for 2009-2010 2ZR-FE and confirm VIN; replaces 90919-02252 Fitment/availability: Ships in 1-3 business …
- Toyota 90919-01253 genuine spark plug
condition- or schedule-based 2ZR-FE plug set accompanying confirmed ignition diagnosis Fitment/availability: 2009-2016 Toyota Corolla catalog branch including 2ZR-FE; use here for 2009-2010 2ZR-FE, quantity four, and confirm VIN/under-ho…
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Sources for this issue (2)
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 Toyota?
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 Toyota it is documented across 1 model: Corolla.
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 Toyota?
Published repair estimates on Toyota range from $60 to $350 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.