P0356 on 1997-2008 Ford F-150 — Ignition Coil F Primary/Secondary Circuit Malfunction
1 vehicles · 1 makes · $200-$800 repair
How to diagnose and fix P0356: most-reported vehicles
Ranked by owner reports. Each card gives the symptoms, how to confirm the cause, the fix, parts and sources for that vehicle.
Ford F-150 · 1997–2008
A failed coil sets a cylinder-specific misfire (P0301-P0308) and often a matching coil-circuit code (P0351-P0358), causing a shake at idle, hesitation, and a flashing check-engine light.
Common Symptoms
- Cylinder-specific misfire, rough idle, engine shake
- Hesitation/bog on acceleration
- Flashing check-engine light
- Fuel smell from exhaust, slight economy drop
How to Fix
Confirm the bad coil by swapping it to an adjacent cylinder and seeing if the misfire follows. Replace the failed coil (and its spark plug), apply dielectric grease to the boot to seal out moisture. Consider a full coil/plug set at high mileage.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Ignition CoilCross-ref0221504704
Bosch Engine Management Sensors 0221504704. Fitment confirmed against the ShowMeTheParts catalog for this vehicle's year and engine.
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Sources for this issue (2)
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P0356 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 P0356 mean?
P0356 stands for "Ignition Coil F Primary/Secondary Circuit Malfunction." The ECM/PCM detected a primary or secondary circuit fault on ignition coil 'F' (6+ cylinder engines). The expected coil pulse/feedback was missing or invalid, pointing to the coil, its wiring/connector, or its PCM driver.
What are the most common causes of P0356?
The most common causes of P0356 are: Faulty ignition coil 'F', Open/short in primary or secondary wiring, Corroded or loose coil connector, Bad spark plug overloading the coil, Failed coil driver in the PCM. The specific cause varies by vehicle.
How much does it cost to fix P0356?
Repair costs for P0356 range from $200 to $800, depending on the vehicle and root cause.
Which vehicles are affected by P0356?
Au7o has documented P0356 across 1 vehicle models from 1 manufacturers: Ford.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.