CKFCar Known Faults
ModerateAffected: 2012-201950,000–100,000 miles

Renault Clio Mk4 0.9 TCe 90bhp — Ignition Coil Pack Failure

Coil packs break down internally with heat and age, causing severe misfires under load.

Severity

Moderate

DIY Difficulty

Easy

Est. Cost

£50–£150

OBD Codes

P0300P0301P0302P0303P0304
Component Diagram

Engine

Typical layout and location for the Engine assembly.

Engine diagram
Reference Illustration

Symptoms

  • Engine hesitates and jerks when accelerating hard
  • Flashing EML light during misfire
  • Rough, lumpy idle
  • P0301-P0304 fault codes

Root Cause

The insulation inside the pencil coil breaks down due to engine heat. The spark then jumps to the cylinder head instead of crossing the spark plug gap.

How To Fix

  1. Read OBD codes to identify which cylinder is misfiring (e.g., P0302 = Cyl 2).
  2. Swap the coil pack to another cylinder and re-read codes to confirm the coil is at fault.
  3. Replace coil pack (£30-60 each).
  4. Advised to replace spark plugs at the same time.

Estimated Repair Costs

Repair OptionEst. Cost (GBP)
DIY (parts only)£20–£60
Independent Garage£50–£150
Main Dealership£80–£240

Other Faults on This Variant

Thermostat Housing Leak

Severe
2012-201940,000–80,000 miles£150–£200

The plastic thermostat housing on the 0.9 TCe warps and cracks, leading to a rapid loss of engine coolant and severe overheating risk.

Timing Chain Stretch and Rattle

Severe
2012-201950,000–90,000 miles£600–£800

The 0.9 TCe 3-cylinder engine suffers from premature timing chain stretch, causing an aggressive rattle and potentially fatal engine timing slip.

VVT Solenoid Oil Leak

Minor
2012-201950,000–100,000 miles£10–£80

The Variable Valve Timing (VVT) solenoid located on the top of the cylinder head leaks oil, which runs down the front of the engine.

Disclaimer: Repair cost estimates are indicative and based on community data. Always get a quote from a qualified mechanic before proceeding with any repair.