🚜Riding Mower

E12

Toro · TimeCutter SS4225 42 in 22.5 HP Riding Mower

Toro TimeCutter SS4225 42 in 22.5 HP Riding Mower E12 Error Fix: Hydrostatic Pump Pressure Low

Low pressure in hydrostatic pump causes poor drive response or loss of power transmission leading to mower drive issues.

High severity2 fixes available

Quick Answer

Error E12 on the Toro TimeCutter SS4225 42 in 22.5 HP Riding Mower means: Hydrostatic Pump Pressure Low. The top-ranked community fix is “Replace Hydrostatic Pump Assembly” (hard difficulty, ~120 min, DIY cost: $300-$350). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · riding mower

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

Mechanical WearPrimary

When to Call a Professional

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

This is a high severity error — continued use may cause damage or a safety hazard
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: $500-$700.

Other Toro Models with Error E12

PowerJet F700 700 CFM Gas Leaf Blower

leaf_blower · 2 fixes

Recycler 22" SmartStow 22 in 160 cc 3.75 HP SmartStow Push Mower with Personal Pace and Recycler Cutting System

push_mower · 2 fixes

TimeCutter 42" Zero-Turn 42 in 22 HP Kohler V-Twin Zero-Turn Riding Mower with Smart Speed Control

riding_mower · 2 fixes

Other Toro TimeCutter SS4225 42 in 22.5 HP Riding Mower Error Codes

E01

Engine Overheat Warning

2 fixes

E02

Blade Engagement Fault

2 fixes

E03

Battery Charging Failure

2 fixes

E04

Fuel Delivery Blockage

2 fixes

E05

Transmission Slip Detected

2 fixes

E06

Electrical System Short Circuit

2 fixes

E07

Deck Height Sensor Fault

2 fixes

E08

Starter Motor Failure

2 fixes

People Also Ask About Toro TimeCutter SS4225 42 in 22.5 HP Riding Mower Error E12

What does error code E12 mean on a Toro TimeCutter SS4225 42 in 22.5 HP Riding Mower?

Error code E12 on the Toro TimeCutter SS4225 42 in 22.5 HP Riding Mower means: Hydrostatic Pump Pressure Low. Low pressure in hydrostatic pump causes poor drive response or loss of power transmission leading to mower drive issues.

How do I fix error code E12 on my Toro TimeCutter SS4225 42 in 22.5 HP Riding Mower?

The most successful fix is "Replace Hydrostatic Pump Assembly" (hard difficulty, ~120 minutes). Estimated DIY cost: $300-$350. HomeMD has 2 community-ranked fixes for this error.

Is error code E12 on a Toro TimeCutter SS4225 42 in 22.5 HP Riding Mower serious?

This error is rated high severity. You should address it promptly — continued use could cause damage or safety concerns.

Can I fix Toro TimeCutter SS4225 42 in 22.5 HP Riding Mower error E12 myself?

Yes — the top-ranked community fix ("Replace Hydrostatic Pump Assembly") is rated hard difficulty and takes about 120 minutes. Tools needed: Socket set, Wrenches, Screwdrivers.

How much does it cost to repair Toro TimeCutter SS4225 42 in 22.5 HP Riding Mower error E12?

DIY cost: $300-$350. Professional repair typically costs $500-$700. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Toro TimeCutter SS4225 42 in 22.5 HP Riding Mower have?

The Toro TimeCutter SS4225 42 in 22.5 HP Riding Mower has 8 other known error codes, including: E01 (Engine Overheat Warning), E02 (Blade Engagement Fault), E03 (Battery Charging Failure), E04 (Fuel Delivery Blockage), E05 (Transmission Slip Detected), and 3 more.

Which other Toro models have the E12 error?

Error code E12 also appears on 3 other Toro models: PowerJet F700 700 CFM Gas Leaf Blower, Recycler 22" SmartStow 22 in 160 cc 3.75 HP SmartStow Push Mower with Personal Pace and Recycler Cutting System, TimeCutter 42" Zero-Turn 42 in 22 HP Kohler V-Twin Zero-Turn Riding Mower with Smart Speed Control. The fix may vary by model, so check each model's specific page for tailored repair steps.

What other error codes does the Toro TimeCutter SS4225 42 in 22.5 HP Riding Mower have?

The Toro TimeCutter SS4225 42 in 22.5 HP Riding Mower has 8 other known error codes:

E01 — Engine Overheat Warning (2 fixes)
E02 — Blade Engagement Fault (2 fixes)
E03 — Battery Charging Failure (2 fixes)
E04 — Fuel Delivery Blockage (2 fixes)
E05 — Transmission Slip Detected (2 fixes)
E06 — Electrical System Short Circuit (2 fixes)
E07 — Deck Height Sensor Fault (2 fixes)
E08 — Starter Motor Failure (2 fixes)

Which other Toro models have the E12 error?

Error code E12 also appears on 3 other Toro models:

PowerJet F700 700 CFM Gas Leaf Blower (leaf blower) · 2 fixes
Recycler 22" SmartStow 22 in 160 cc 3.75 HP SmartStow Push Mower with Personal Pace and Recycler Cutting System (push mower) · 2 fixes
TimeCutter 42" Zero-Turn 42 in 22 HP Kohler V-Twin Zero-Turn Riding Mower with Smart Speed Control (riding mower) · 2 fixes

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