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P0354 on RAM: Symptoms, Causes & Fix

Ignition Coil D Primary/Secondary Circuit Malfunction

Official technical diagnostic wire for fault code P0354 specifically affecting RAM vehicles (1500, 2500, 3500, TRX).

Sensor Voltage Ref
0.1V – 5.0V Ref
RAM Factory Standard
CAN Bus Speed
500 kbps CAN-FD
ISO 15765-4 Diagnostic Bus
Drivability Status
Not Recommended
Critical urgency level
Est. Repair Cost
$100 - $350 (DIY: $30 - $90)
Parts & Labor DIY
Model-Specific Diagnostic Wires

Select Your RAM Model for P0354:

5 Models Available

1. Common Symptoms on RAM Vehicles

When RAM Engine Control Modules (ECM) trigger fault code P0354, drivers typically report:

Flashing CEL on RAM Powertrains
Rough running on RAM Powertrains
Loss of power on RAM Powertrains
P0304 code on RAM Powertrains

2. Root Causes on RAM Engines

Historical diagnostic claims across RAM engines point to the following failure distribution:

55%
Dead Cylinder 4 ignition coil (RAM OEM Part)
25%
Wiring damage (RAM OEM Part)
12%
Corroded connector (RAM OEM Part)

3. Step-by-Step Fix Protocol for RAM

01
Test Coil with Swap Method

Swap Coil 4 to Cylinder 1. on RAM engines.

Required Tool: 10mm Socket
02
Replace Coil 4

Install new OEM coil pack. on RAM engines.

Required Tool: Socket Set
03
Clear DTCs

Clear memory and road test. on RAM engines.

Required Tool: OBD-II Scanner
Recommended Parts & Testing Tools

Equipment for Diagnosing RAM (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 RAM.

$36 – $68 Prime
Check Price on Amazon
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
View on Amazon
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.

Compare OEM & Aftermarket Replacement Sensors for RAMVerified direct-fit pricing from Denso, Bosch, Motorcraft, and ACDelco on Amazon.
Find Parts on Amazon
* As an Amazon Associate, MazicBay earns from qualifying purchases. Prices & availability subject to change.

4. RAM P0354 Frequently Asked Questions

What does code P0354 mean on a RAM?

On RAM vehicles, P0354 indicates that the Engine Control Module (ECM) detected ignition coil d primary/secondary circuit malfunction. This typically points to Dead Cylinder 4 ignition coil or Wiring damage.

Can I continue driving my RAM with code P0354?

No. Cylinder 4 ignition coil has failed. Because this code carries a Critical severity rating on RAM powertrains, we recommend scanning live data values promptly to prevent secondary damage.

How much does it cost to fix code P0354 on a RAM?

Estimated DIY parts cost ranges from $100 - $350 (DIY: $30 - $90), while professional shop repairs at an authorized RAM dealership or independent specialist typically range from $180 to $380 including diagnostic labor.