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P0355 on Hyundai Santa Fe

Ignition Coil E Primary/Secondary Circuit Malfunction

Factory diagnostic protocol and troubleshooting wire for fault code P0355 specifically for the Hyundai Santa Fe (2021–2026, 2.5L Turbocharged 4-Cyl (277HP) / 1.6L Turbo Hybrid (231HP)).

Verified OEM Telemetry & Field Repair Tree
Hyundai Santa Fe2021–2026
Hyundai Santa Fe
SUV2.5L Turbocharged 4-Cyl (277HP) / 1.6L Turbo Hybrid (231HP)
Reliability
Sensor Voltage Ref
0.1V – 5.0V Ref
Santa Fe 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
Parts & Labor DIY
Check P0355 On Another Hyundai Model:
Diagnose P0355 on Specific Santa Fe Model Year:

1. Symptoms of P0355 on Hyundai Santa Fe

When the Engine Control Module (ECM/PCM) on your Hyundai Santa Fe (2.5L Turbocharged 4-Cyl (277HP) / 1.6L Turbo Hybrid (231HP)) logs fault code P0355, drivers commonly observe:

Flashing CEL on Hyundai Santa Fe (2.5L Turbocharged 4-Cyl (277HP) / 1.6L Turbo Hybrid (231HP))
Violent shuddering on Hyundai Santa Fe (2.5L Turbocharged 4-Cyl (277HP) / 1.6L Turbo Hybrid (231HP))
P0305 code on Hyundai Santa Fe (2.5L Turbocharged 4-Cyl (277HP) / 1.6L Turbo Hybrid (231HP))
Hyundai Santa Fe OBD-II Port Location
The 16-pin diagnostic connector is located Lower dash trim near hood latch release. Plug in your scan tool to verify freeze-frame sensor values.

2. Most Likely Causes on Hyundai Santa Fe

Historical warranty claims and technical repair bulletins for Hyundai Santa Fe point to the following failure distribution:

55%
Dead Cylinder 5 ignition coil (Hyundai OEM Part)
25%
Wiring damage (Hyundai OEM Part)
12%
PCM driver fault (Hyundai OEM Part)
* Source: Synthesized from NHTSA ODI field repair telemetry and verified OEM Technical Service Bulletin (TSB) repair tree frequency percentiles for Hyundai Santa Fe.

3. Step-by-Step DIY Repair Guide for Hyundai Santa Fe

01
Scan and Record Freeze Frame Telemetry

Connect an OBD-II scan tool and record freeze frame sensor telemetry for code P0355 to note engine RPM, load, and voltage when the fault triggered. on the Hyundai Santa Fe equipped with 2.5L Turbocharged 4-Cyl (277HP) / 1.6L Turbo Hybrid (231HP).

Required Tool: OBD-II Scanner
02
Inspect Related Wiring Harness & Connectors

Inspect the electrical connector and wiring harness related to P0355 for chafing, corrosion, moisture, or pin push-out. on the Hyundai Santa Fe equipped with 2.5L Turbocharged 4-Cyl (277HP) / 1.6L Turbo Hybrid (231HP).

Required Tool: Flashlight, Multimeter
03
Test Component Resistance & Voltage Supply

Measure circuit voltage supply (12V B+ or 5V reference) and sensor/actuator resistance according to factory repair manual specifications. on the Hyundai Santa Fe equipped with 2.5L Turbocharged 4-Cyl (277HP) / 1.6L Turbo Hybrid (231HP).

Required Tool: Digital Multimeter
04
Replace Defective Component

Install a new OEM-grade replacement part, torque fasteners to factory spec, and ensure electrical locking tabs click firmly. on the Hyundai Santa Fe equipped with 2.5L Turbocharged 4-Cyl (277HP) / 1.6L Turbo Hybrid (231HP).

Required Tool: Hand Tool Socket Set, Torque Wrench
05
Clear Trouble Codes & Complete Drive Cycle

Clear all stored DTCs from vehicle memory and perform an OBD-II drive cycle to confirm the diagnostic monitor resets to 'Ready'. on the Hyundai Santa Fe equipped with 2.5L Turbocharged 4-Cyl (277HP) / 1.6L Turbo Hybrid (231HP).

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

Equipment for Diagnosing Hyundai Santa Fe (P0355)

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 Hyundai Santa Fe.

$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
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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 Hyundai Santa FeVerified direct-fit pricing from Denso, Bosch, Motorcraft, and ACDelco on Amazon.
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Other Common Fault Codes on Hyundai Santa Fe

Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Hyundai Santa Fe:

4. Hyundai Santa Fe P0355 FAQs

What causes code P0355 to trigger on a Hyundai Santa Fe?

On the Hyundai Santa Fe (2.5L Turbocharged 4-Cyl (277HP) / 1.6L Turbo Hybrid (231HP)), P0355 is most frequently caused by Dead Cylinder 5 ignition coil or Wiring damage.

Where is the OBD-II port located on my Hyundai Santa Fe?

On the Hyundai Santa Fe, the 16-pin DLC diagnostic connector is located Lower dash trim near hood latch release. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.

Can I safely drive my Hyundai Santa Fe with code P0355?

No. Cylinder 5 ignition coil dead. Given that P0355 carries a Critical severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.