STIHL BR 600 Backpack Blower E5 Error Fix: Spark Plug Fouled

The spark plug is dirty or fouled, leading to poor ignition and engine stalling or failure to start.

Medium severity2 fixes available

Quick Answer

Error E5 on the STIHL BR 600 Backpack Blower means: Spark Plug Fouled. The top-ranked community fix is “Replace spark plug” (easy difficulty, ~10 min, DIY cost: $8-$15). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · leaf blower

Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.

When to Call a Professional

While many leaf blower repairs can be done safely at home, consider hiring a qualified technician if:

The repair involves electrical wiring, gas lines, or refrigerant
You've tried the top-ranked fix and the error persists
You smell gas, see sparking, or notice water leaking
The repair requires specialized tools you don't have
Your appliance is still under manufacturer warranty

Average professional repair cost for this issue: $50-$90.

Other STIHL BR 600 Backpack Blower Error Codes

Exhaust Blockage

Clogged Fuel Line

Carburetor Air Leak

Clutch Slippage

Battery Charging Failure

Worn Bearings

Wiring Harness Damage

2 fixes

E17

Clogged Fuel Filter

2 fixes

People Also Ask About STIHL BR 600 Backpack Blower Error E5

What does error code E5 mean on a STIHL BR 600 Backpack Blower?

Error code E5 on the STIHL BR 600 Backpack Blower means: Spark Plug Fouled. The spark plug is dirty or fouled, leading to poor ignition and engine stalling or failure to start.

How do I fix error code E5 on my STIHL BR 600 Backpack Blower?

The most successful fix is "Replace spark plug" (easy difficulty, ~10 minutes). Estimated DIY cost: $8-$15. HomeMD has 2 community-ranked fixes for this error.

Is error code E5 on a STIHL BR 600 Backpack Blower serious?

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Can I fix STIHL BR 600 Backpack Blower error E5 myself?

Yes — the top-ranked community fix ("Replace spark plug") is rated easy difficulty and takes about 10 minutes. Tools needed: Spark plug socket, Torque wrench.

How much does it cost to repair STIHL BR 600 Backpack Blower error E5?

DIY cost: $8-$15. Professional repair typically costs $50-$90. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the STIHL BR 600 Backpack Blower have?

The STIHL BR 600 Backpack Blower has 8 other known error codes, including: E10 (Exhaust Blockage), E11 (Clogged Fuel Line), E12 (Carburetor Air Leak), E13 (Clutch Slippage), E14 (Battery Charging Failure), and 3 more.

What other error codes does the STIHL BR 600 Backpack Blower have?

The STIHL BR 600 Backpack Blower has 8 other known error codes:

E10 — Exhaust Blockage (2 fixes)
E11 — Clogged Fuel Line (2 fixes)
E12 — Carburetor Air Leak (2 fixes)
E13 — Clutch Slippage (2 fixes)
E14 — Battery Charging Failure (2 fixes)
E15 — Worn Bearings (2 fixes)
E16 — Wiring Harness Damage (2 fixes)
E17 — Clogged Fuel Filter (2 fixes)

Ad Space — banner

Replace ADSENSE_PUBLISHER_ID in AdUnit.tsx