🍂Leaf Blower

E04

STIHL · BGA 57 Battery Blower

STIHL BGA 57 Battery Blower E04 Error Fix: Throttle Trigger Fault

The throttle trigger sensor is malfunctioning or the trigger is stuck, causing the blower to fail to respond to user input or run erratically.

Medium severity2 fixes available

Quick Answer

Error E04 on the STIHL BGA 57 Battery Blower means: Throttle Trigger Fault. The top-ranked community fix is “Replace Throttle Trigger Assembly” (medium difficulty, ~40 min, DIY cost: $40-$60). 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.

Root Cause Analysis

Sensor MalfunctionPrimary

Electrical Fault

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: $90-$130.

Other STIHL Models with Error E04

BG 86 C-E Blower

leaf_blower · 2 fixes

FS 56 RC-E Trimmer

string_trimmer · 2 fixes

FS 91 R Trimmer

string_trimmer · 2 fixes

FSA 57 Battery Trimmer

string_trimmer · 2 fixes

MS 180 C-BE Chainsaw

chainsaw · 2 fixes

MS 250 45.4 cc 2-Stroke Gas Chainsaw with 18" Bar and Anti-Vibration System

chainsaw · 2 fixes

MS 271 Farm Boss Chainsaw

chainsaw · 2 fixes

MS 362 C-M Chainsaw

chainsaw · 2 fixes

MSA 220 C-B Battery

chainsaw · 2 fixes

Other STIHL BGA 57 Battery Blower Error Codes

E01

Battery Communication Error

2 fixes

E02

Motor Overcurrent Protection Triggered

2 fixes

E03

Battery Overtemperature Shutdown

Fan Motor Stalled

Control Board Failure

Battery Not Charging

Thermal Overload Shutdown

2 fixes

E09

Battery Cell Imbalance Detected

2 fixes

People Also Ask About STIHL BGA 57 Battery Blower Error E04

What does error code E04 mean on a STIHL BGA 57 Battery Blower?

Error code E04 on the STIHL BGA 57 Battery Blower means: Throttle Trigger Fault. The throttle trigger sensor is malfunctioning or the trigger is stuck, causing the blower to fail to respond to user input or run erratically.

How do I fix error code E04 on my STIHL BGA 57 Battery Blower?

The most successful fix is "Replace Throttle Trigger Assembly" (medium difficulty, ~40 minutes). Estimated DIY cost: $40-$60. HomeMD has 2 community-ranked fixes for this error.

Is error code E04 on a STIHL BGA 57 Battery 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 BGA 57 Battery Blower error E04 myself?

Yes — the top-ranked community fix ("Replace Throttle Trigger Assembly") is rated medium difficulty and takes about 40 minutes. Tools needed: Phillips screwdriver, Multimeter.

How much does it cost to repair STIHL BGA 57 Battery Blower error E04?

DIY cost: $40-$60. Professional repair typically costs $90-$130. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the STIHL BGA 57 Battery Blower have?

The STIHL BGA 57 Battery Blower has 8 other known error codes, including: E01 (Battery Communication Error), E02 (Motor Overcurrent Protection Triggered), E03 (Battery Overtemperature Shutdown), E05 (Fan Motor Stalled), E06 (Control Board Failure), and 3 more.

Which other STIHL models have the E04 error?

Error code E04 also appears on 9 other STIHL models: BG 86 C-E Blower, FS 56 RC-E Trimmer, FS 91 R Trimmer, FSA 57 Battery Trimmer, MS 180 C-BE Chainsaw, MS 250 45.4 cc 2-Stroke Gas Chainsaw with 18" Bar and Anti-Vibration System, and 3 more. The fix may vary by model, so check each model's specific page for tailored repair steps.

What other error codes does the STIHL BGA 57 Battery Blower have?

The STIHL BGA 57 Battery Blower has 8 other known error codes:

E01 — Battery Communication Error (2 fixes)
E02 — Motor Overcurrent Protection Triggered (2 fixes)
E03 — Battery Overtemperature Shutdown (2 fixes)
E05 — Fan Motor Stalled (2 fixes)
E06 — Control Board Failure (2 fixes)
E07 — Battery Not Charging (2 fixes)
E08 — Thermal Overload Shutdown (2 fixes)
E09 — Battery Cell Imbalance Detected (2 fixes)

Which other STIHL models have the E04 error?

Error code E04 also appears on 9 other STIHL models:

BG 86 C-E Blower (leaf blower) · 2 fixes
FS 56 RC-E Trimmer (string trimmer) · 2 fixes
FS 91 R Trimmer (string trimmer) · 2 fixes
FSA 57 Battery Trimmer (string trimmer) · 2 fixes
MS 180 C-BE Chainsaw (chainsaw) · 2 fixes
MS 250 45.4 cc 2-Stroke Gas Chainsaw with 18" Bar and Anti-Vibration System (chainsaw) · 2 fixes
MS 271 Farm Boss Chainsaw (chainsaw) · 2 fixes
MS 362 C-M Chainsaw (chainsaw) · 2 fixes
MSA 220 C-B Battery (chainsaw) · 2 fixes

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