P0354 on Audi
Ignition Coil D Primary/Secondary Circuit Malfunction
P0354 on Audi vehicles indicates ignition coil d primary/secondary circuit malfunction. Au7o has documented this code across 1 Audi model — most commonly on A4. 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. Typical repair costs on Audi range from $100 to $400, depending on the specific model and root cause.
Common Causes of P0354
- •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)
P0354 on Audi by Model
Audi A4(1 issue)
- Ignition Coil Failure2009-2021
Ignition coils on 2.0T engines can fail, causing misfires. This is especially common at higher mileage or with modified vehicles. Multiple coil failures often occur around the same mileage.
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View P0354 across all makes →Frequently Asked Questions
What does P0354 mean on Audi?▼
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 Audi specifically, this code is documented across 1 model.
What causes P0354 on Audi vehicles?▼
Common causes on Audi: 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. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0354 on a Audi?▼
Repair costs on Audi range from $100 to $400, depending on the specific model and root cause.
Which Audi models have P0354 documented?▼
Au7o has documented P0354 on 1 Audi model: A4.