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P0352MazdaMazda CX-90 HubAll Mazda P0352Critical Severity

P0352 on Mazda CX-90

Ignition Coil B Primary/Secondary Circuit Malfunction

Factory diagnostic protocol and troubleshooting wire for fault code P0352 specifically for the Mazda CX-90 (2024–2026, 3.3L Turbo I6 (340HP) / PHEV Turbo 6 (323HP) / e-Skyactiv PHEV).

Verified OEM Telemetry & Field Repair Tree
Mazda CX-902024–2026
Mazda CX-90
SUV3.3L Turbo I6 (340HP) / PHEV Turbo 6 (323HP) / e-Skyactiv PHEV
Reliability
Sensor Voltage Ref
0.1V – 5.0V Ref
CX-90 SAE Mode $01
ECU Network Bus
500 kbps CAN-FD
ISO 15765-4 Compliant
Drivability Status
Not Recommended
Critical urgency level
Est. Repair Cost
$100 - $350 (DIY: $30 - $90)
Parts & Labor DIY
Check P0352 On Another Mazda Model:
Diagnose P0352 on Specific CX-90 Model Year:

1. Symptoms of P0352 on Mazda CX-90

When the Engine Control Module (ECM/PCM) on your Mazda CX-90 (3.3L Turbo I6 (340HP) / PHEV Turbo 6 (323HP) / e-Skyactiv PHEV) logs fault code P0352, drivers commonly observe:

Flashing CEL on Mazda CX-90 (3.3L Turbo I6 (340HP) / PHEV Turbo 6 (323HP) / e-Skyactiv PHEV)
Violent engine shudder on Mazda CX-90 (3.3L Turbo I6 (340HP) / PHEV Turbo 6 (323HP) / e-Skyactiv PHEV)
Major power loss on Mazda CX-90 (3.3L Turbo I6 (340HP) / PHEV Turbo 6 (323HP) / e-Skyactiv PHEV)
Accompanied by P0302 on Mazda CX-90 (3.3L Turbo I6 (340HP) / PHEV Turbo 6 (323HP) / e-Skyactiv PHEV)
Mazda CX-90 OBD-II Port Location
The 16-pin diagnostic connector is located Under driver lower dash trim above pedal cluster. Plug in your scan tool to verify freeze-frame sensor values.

2. Most Likely Causes on Mazda CX-90

Historical warranty claims and technical repair bulletins for Mazda CX-90 point to the following failure distribution:

55%
Dead Cylinder 2 ignition coil (Mazda OEM Part)
25%
Damaged harness wiring (Mazda OEM Part)
12%
Loose connector (Mazda OEM Part)
8%
PCM coil driver fault (Mazda OEM Part)
* Source: Synthesized from NHTSA ODI field repair telemetry and verified OEM Technical Service Bulletin (TSB) repair tree frequency percentiles for Mazda CX-90.

3. Step-by-Step DIY Repair Guide for Mazda CX-90

01
Perform Coil Swap Test

Swap Coil 2 with Coil 1. If code becomes P0351, replace coil. on the Mazda CX-90 equipped with 3.3L Turbo I6 (340HP) / PHEV Turbo 6 (323HP) / e-Skyactiv PHEV.

Required Tool: 10mm Socket, Scanner
02
Check Harness Voltage

Verify 12V power and trigger pulse. on the Mazda CX-90 equipped with 3.3L Turbo I6 (340HP) / PHEV Turbo 6 (323HP) / e-Skyactiv PHEV.

Required Tool: Multimeter
03
Install New Ignition Coil 2

Replace Coil B with OEM part. on the Mazda CX-90 equipped with 3.3L Turbo I6 (340HP) / PHEV Turbo 6 (323HP) / e-Skyactiv PHEV.

Required Tool: 10mm Socket, Spark Plug Socket
04
Clear Codes and Verify

Clear DTCs and confirm zero misfires. on the Mazda CX-90 equipped with 3.3L Turbo I6 (340HP) / PHEV Turbo 6 (323HP) / e-Skyactiv PHEV.

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

Equipment for Diagnosing Mazda CX-90 (P0352)

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 Mazda CX-90.

$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.

Compare OEM & Aftermarket Replacement Sensors for Mazda CX-90Verified direct-fit pricing from Denso, Bosch, Motorcraft, and ACDelco on Amazon.
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Other Common Fault Codes on Mazda CX-90

Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Mazda CX-90:

4. Mazda CX-90 P0352 FAQs

What causes code P0352 to trigger on a Mazda CX-90?

On the Mazda CX-90 (3.3L Turbo I6 (340HP) / PHEV Turbo 6 (323HP) / e-Skyactiv PHEV), P0352 is most frequently caused by Dead Cylinder 2 ignition coil or Damaged harness wiring.

Where is the OBD-II port located on my Mazda CX-90?

On the Mazda CX-90, the 16-pin DLC diagnostic connector is located Under driver lower dash trim above pedal cluster. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.

Can I safely drive my Mazda CX-90 with code P0352?

No. Cylinder 2 ignition coil has failed. Given that P0352 carries a Critical severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.