What causes the P0301 code?

Failed coil pack on cylinder 1; Faulty wiring harness connecting the respective sensor; Aging electrical connections or corrosion due to environmental elements specific to renault vehicles.

How to fix the P0301 code?

Conduct a complete OBD2 scan. Inspect the engine bay for loose connections related to Cylinder 1 Misfire Detected. Replace failed components with genuine OEM renault parts to ensure the fault does not return. Clear the ECU memory afterwards.

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Renault

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P0301

RENAULT P0301 Cylinder 1 Misfire Detected

The P0301 diagnostic trouble code indicates an issue with the Cylinder 1 Misfire Detected. Widely seen on Renault and Dacia models, typically caused by failed coil pack on cylinder 1. Found frequently across renault models utilizing 1.5 dCi, TCe 130 engines, this code will illuminate the Check Engine Light and may cause the vehicle to enter Limp Mode to protect the mechanical components.

Brand

Renault

Fault Code

P0301

Severity

🔴 High

Models

Clio, Megane, Laguna, Scenic, Kangoo, Duster, Sandero

🛠️ Diagnostic Overview

Difficulty Level

🛠️🛠️🛠️ Hard (Advanced)

Estimated Time

⏱️ 3-6 Hours

🧰 Required Tools

✓ Digital Multimeter
✓ OBD2 Diagnostic Scanner
✓ Socket Wrench & Hand Tools
✓ Electrical Contact Cleaner Spray

⚠️ Possible Causes

• Failed coil pack on cylinder 1
• Faulty wiring harness connecting the respective sensor
• Aging electrical connections or corrosion due to environmental elements specific to renault vehicles.

🔧 Recommended Fixes

→ Conduct a complete OBD2 scan. Inspect the engine bay for loose connections related to Cylinder 1 Misfire Detected. Replace failed components with genuine OEM renault parts to ensure the fault does not return. Clear the ECU memory afterwards.

🔴 This is a high-priority fault. Have the vehicle inspected by a qualified technician as soon as possible.

🚗 Commonly Affected Vehicles