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P0354Automotive OBD-IICritical Severity

P0354: P0354: Ignition Coil D Primary/Secondary Circuit Malfunction

Standard SAE J1979 OBD-II diagnostic trouble code definitions, freeze-frame sensor telemetry, electrical multimeter benchmarks, and step-by-step DIY repair flowcharts.

Est. DIY Parts Cost

$100 - $350 (DIY: $30 - $90)

Direct-fit replacement

Shop Labor Quote

$150 – $350

Independent garage avg

Drivability Status

Not Recommended

Standard Caution

Repair Time

30 – 90 Min

Standard DIY difficulty

Diagnose P0354 on Your Specific Vehicle Brand:

1. Symptoms & Warning Signs

When fault code P0354 is triggered by the Engine Control Module (ECM), drivers frequently experience the following symptoms:

Flashing CEL

Rough running

Loss of power

P0304 code

Can You Drive With Code P0354?

No. Cylinder 4 ignition coil has failed.

2. Most Likely Causes

Root cause statistical probability compiled from NHTSA ODI complaint telemetry, ASE Master Technician field records, and OEM Factory Service Manual diagnostic trees for P0354:

55%

Dead Cylinder 4 ignition coil

25%

Wiring damage

12%

Corroded connector

* Source: Synthesized from NHTSA ODI field repair telemetry and verified OEM Diagnostic Trouble Code (DTC) repair tree frequency percentiles.

3. Step-by-Step DIY Repair Instructions

Test Coil with Swap Method

Swap Coil 4 to Cylinder 1.

Required Tool: 10mm Socket

Replace Coil 4

Install new OEM coil pack.

Required Tool: Socket Set

Clear DTCs

Clear memory and road test.

Required Tool: OBD-II Scanner

Recommended Parts & Testing Tools

Equipment for Diagnosing Universal Automotive (P0354)

Prime Fast Delivery & Verified Fitment

OEM Ignition Component

Direct-Fit Laser Iridium Spark Plugs (Set of 4/6)

4.8 / 5.0 (Top Rated)

Pre-gapped iridium spark plugs engineered to restore smooth combustion on Universal Automotive.

$36 – $68 Prime

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Ignition Service Tool

Magnetic Swivel Spark Plug Socket Set

4.8 / 5.0 (Amazon Choice)

360-degree magnetic swivel socket prevents ceramic plug cracks inside deep engine spark wells.

$16.99 Prime

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Top Mobile OBD-II Scanner

BlueDriver Bluetooth Pro OBDII Scan Tool

4.7 / 5.0 (50,000+ Reviews)

Reads and clears enhanced codes (ABS, Airbag, Transmission, Engine) & live freeze-frame telemetry on phone.

$99.95 Prime

Check Price on Amazon

Compare OEM & Aftermarket Replacement Sensors for Universal AutomotiveVerified direct-fit pricing from Denso, Bosch, Motorcraft, and ACDelco on Amazon.

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