Speed Queen Error Codes — All 154 Diagnostic Codes & Fixes

Service Guy AI • Complete Speed Queen diagnostic database for commercial laundry equipment

Total Codes
154
Washer Codes
91
Dryer Codes
63
Critical
4

About Speed Queen Error Codes

Speed Queen is the #1 market share brand in US coin laundromats. Founded in 1908 and built by Alliance Laundry Systems, Speed Queen machines are known for 25,000-cycle durability standards and the longest warranties in the industry. Their diagnostic codes appear on Quantum and Galaxy control platforms, with a unique numbering system that distinguishes washer faults from dryer faults. The most common Speed Queen issues are door latch wear, drain valve failures, and bearing replacement at 7-10 years — all patterns you can see in the error code table below.

Service Guy AI maintains the Speed Queen diagnostic database with troubleshooting steps, possible causes, required parts (with OEM part numbers where available), and skill-level guidance ranging from beginner attendant fixes to advanced electromechanical work that requires a factory-certified technician.

Most Common Speed Queen Issues

  • Door latch assembly wear (dL codes)
  • Drain valve failure (E21/F02 variants)
  • Bearing replacement at 7-10 years (E07 codes)
  • Control board calibration drift (touchscreen models)

How to Use This Speed Queen Error Code Database

Locate your Speed Queen error code in the table below and click it for a complete troubleshooting walkthrough. Codes are color-coded by severity — critical codes require immediate attention (the machine will typically lock the door and refuse to run), while medium and low codes allow continued operation but should be cleared before the issue escalates. For complex faults or when the displayed code isn't listed, run a Service Guy AI photo diagnosis — upload an image of the error display and the AI matches it against the full database including model-specific firmware variants.

All 154 Speed Queen Diagnostic Codes

Every documented Speed Queen error code for commercial washers and dryers. Click a code for full troubleshooting steps, parts, and skill-level guidance.

Code Fault Equipment Severity Skill
2-3 Speed Queen 2-3 Error Washer medium professional
4-3 Speed Queen 4-3 Error Washer medium professional
5-2 Speed Queen 5-2 Error Washer medium professional
5L Suds lock Washer low basic
AF Airflow restricted Washer low basic
AFx Airflow restricted Washer low basic
AL01 Speed Queen AL01 Error Washer medium intermediate
AL02 Speed Queen AL02 Error Washer medium intermediate
AUTH_FAIL Speed Queen AUTH_FAIL Error Washer medium basic
Alm-A Speed Queen Alm-A Error Washer medium intermediate
Alrm Vault/door switch (1990 Phase 3) Dryer medium intermediate
Auto-deploys Speed Queen Auto-deploys Error Dryer medium basic
BT_OFF Speed Queen BT_OFF Error Washer medium professional
Break-In Vault/door switch (1990 Phase 3) Dryer medium intermediate
Button Speed Queen Button Error Dryer medium basic
C00 Card reader communication Dryer low basic
C02 Card timeout Dryer low basic
C03 Invalid card Dryer low basic
C09 Corrupted card data Dryer medium basic
C19 Reader not communicating Dryer medium basic
C20 Card unreadable Dryer low basic
C21 Wrong security code Dryer low basic
C23 Card value exceeded Dryer low basic
CARD_BAD Speed Queen CARD_BAD Error Washer medium basic
CARD_DECLINED Speed Queen CARD_DECLINED Error Washer medium basic
CK_L_COIN Speed Queen CK_L_COIN Error Washer medium basic
CK_R_COIN Speed Queen CK_R_COIN Error Washer medium basic
CLEANBI Speed Queen CLEANBI Error Dryer medium basic
CONNECT_ERR Speed Queen CONNECT_ERR Error Washer medium basic
CONN_ERR Speed Queen CONN_ERR Error Washer medium basic
Core Speed Queen Core Error Dryer medium basic
DECLINED Speed Queen DECLINED Error Washer medium basic
DEX_FAIL Speed Queen DEX_FAIL Error Washer medium basic
DNS Speed Queen DNS Error Dryer medium basic
Disconnect Wand removed early Dryer medium intermediate
Domain Speed Queen Domain Error Dryer medium basic
Door Fault Latch switch open (1995+ Phase 4) Washer medium intermediate
Dr Drain alarm / slow drain Washer low basic
E Speed Queen E Error Washer high basic
E Ub (2010–2025) Unbalance (rare on top-load) Washer low intermediate
E dL (2005–2015) Lid lock fault Washer medium intermediate
E07 Speed Queen E07 Error Washer medium basic
E1 Speed Queen E1 Error Washer medium basic
E2 Speed Queen E2 Error Washer medium basic
E:00 IR comm fault (micro-wand, 1995+) Dryer medium intermediate
E:01 Wand misaim (Phase 4) Dryer low intermediate
E:02 Wand removed early Dryer low intermediate
E:05 Download error Dryer medium intermediate
E:AF Airflow Restriction Washer medium intermediate
E:BS Error Code E:BS Dryer medium intermediate
E:DO Error Code E:DO Dryer medium intermediate
E:FL Error Code E:FL Dryer medium intermediate
E:HC Heater Circuit Error Dryer medium intermediate
E:HT Error Code E:HT Dryer medium intermediate
E:IG Error Code E:IG Dryer medium intermediate
E:LS Lint sensor Dryer medium intermediate
E:OP Temp sensor open (1992–2000) Dryer medium intermediate
E:PS Pressure sensor Washer medium intermediate
E:SH Error Code E:SH Dryer medium intermediate
E:TL Error Code E:TL Dryer medium intermediate
E:TP Error Code E:TP Dryer medium intermediate
E:ubL Low unbalance detection Dryer medium intermediate
EC_00 Card reader communication Dryer low basic
EC_02 Card timeout Dryer low basic
EC_03 Invalid card Dryer low basic
EC_09 Corrupted card data Dryer medium basic
EC_19 Reader not communicating Dryer medium basic
EC_20 Card unreadable Dryer low basic
EC_21 Wrong security code Dryer low basic
EC_23 Card value exceeded Dryer low basic
ERROR_16 Speed Queen ERROR_16 Error Washer medium professional
EXTRA_COIN Speed Queen EXTRA_COIN Error Washer medium basic
Ed_10 Drive failure Washer high professional
Ed_29 Motor not connected Washer high intermediate
Er_03 Motor phase error Washer high intermediate
Er_04 Locked rotor Washer medium basic
Er_05 IPM temperature high Washer medium basic
Er_18 Wrong input voltage Washer low basic
Er_5L Suds lock Washer low basic
Er_FL Fill Error Washer medium intermediate
Er_HC Heater circuit Washer low basic
Er_LE Water leak detected Washer medium basic
Er_Ub Unbalanced load Washer medium basic
Er_Vo Incorrect voltage Washer low basic
Er_bd Control/drive communication Washer high basic
Er_bt Belt error / slip Washer low basic
Er_dF Drive failure Washer high professional
Er_dL Door lock fault Washer low basic
Er_dN Drive board not ready Washer high professional
Er_do Door open during cycle Washer medium basic
Er_dr Drain Error Washer medium intermediate
Er_oF Overflow / overfill Washer low basic
Er_tS Temperature sensor shorted Washer low basic
Example Speed Queen Example Error Dryer medium basic
F1 Speed Queen F1 Error Washer medium intermediate
F2 Speed Queen F2 Error Washer medium basic
Flowchart Speed Queen Flowchart Error Dryer medium basic
Format Speed Queen Format Error Washer medium basic
GS Gas safety Washer critical professional
Gen Error IR comm fault (micro-wand, 1995+) Dryer medium intermediate
H Speed Queen H Error Washer medium basic
HC Heater circuit (gas) Washer critical professional
HC (electric) Heater circuit (electric) Dryer medium basic
HCx Heater circuit (gas) Dryer critical professional
Invalid Value Download error Dryer medium intermediate
JAM Speed Queen JAM Error Washer medium basic
LE Water leak detected Washer medium basic
LS Lint sensor Dryer low basic
LSx Lint sensor Dryer low basic
Layout Speed Queen Layout Error Dryer medium basic
M00 Speed Queen M00 Error Washer medium basic
Monetization Speed Queen Monetization Error Dryer medium basic
NO-DISPLAY Inlet valve stuck / screens clogged Washer medium intermediate
NO_SIGNAL Speed Queen NO_SIGNAL Error Washer medium basic
New Speed Queen New Error Washer high intermediate
OFF Break-in alarm Washer critical basic
OFFLINE Speed Queen OFFLINE Error Washer medium basic
Open Sensor Temp sensor open (1992–2000) Dryer medium intermediate
PF Power failure Washer low basic
PF (Power Failure) Fuse or power interrupt Washer low beginner
POS Speed Queen POS Error Dryer medium basic
PS Pressure switch Washer low basic
PSx Pressure switch Washer low basic
Proximity Wand misaim (Phase 4) Dryer medium intermediate
RT Rotation fault Washer low basic
Result Speed Queen Result Error Dryer medium basic
SERVER_DOWN Speed Queen SERVER_DOWN Error Washer medium basic
SH Thermistor short (Huebsch cross) Dryer medium intermediate
SUdS (2015–2025) Excess suds Washer medium intermediate
Shorted Thermistor short (Huebsch cross) Dryer medium intermediate
Step-by-Step Speed Queen Step-by-Step Error Dryer medium basic
Sud Excess suds Washer medium intermediate
Task Speed Queen Task Error Dryer medium basic
Test Speed Queen Test Error Dryer medium professional
UX Speed Queen UX Error Dryer medium basic
UX/Conversion Speed Queen UX/Conversion Error Dryer medium basic
Ub Unbalanced load Washer medium intermediate
V00/V01 Speed Queen V00/V01 Error Washer medium basic
VC Voltage communication Washer low basic
bt Belt error / slip Washer low basic
dE Drain alarm / slow drain Washer low basic
dL Door lock fault Washer low basic
do Door open during cycle Washer medium basic
door Latch switch open (1995+ Phase 4) Washer medium intermediate
dr Drain alarm / slow drain Washer low basic
oF Overflow / overfill Washer low basic
tS Temperature sensor shorted Washer low basic
tsxCopy/ Speed Queen tsxCopy/ Error Dryer medium basic
ub Unbalanced load Washer medium basic
ubL Low unbalance detection Washer medium basic
ubLx Low unbalance detection Washer medium basic
“No Drain” Pump failure or coin trap Washer medium intermediate
“No Fill” Inlet valve stuck / screens clogged Washer medium intermediate
“No Spin” Belt or clutch Washer medium intermediate

Still Stuck? Use Service Guy AI

Still seeing a code that isn't in the table? Speed Queen has firmware variants across Quantum, Galaxy, and X-Series control platforms. Service Guy AI can read a photo of your error display and match it against the exact firmware version — including the new X-Series touchscreen codes that aren't yet in the static database.

Service Guy AI Diagnosis Browse Speed Queen Equipment

Speed Queen Parts, Service & Equipment Replacement

When an error code points to a failed component, AAdvantage Laundry Systems carries OEM Speed Queen replacement parts and offers nationwide service dispatch. For laundromat owners whose Speed Queen equipment has reached end-of-life or whose repair costs exceed 50% of replacement value, AAdvantage also handles equipment financing and new-machine installation with full coin/credit-card retrofit packages.

All Error CodesService Guy AI DiagnosisSpeed Queen EquipmentOEM Parts & ServiceEquipment Hub

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By — Founder, WashBizHub. Third-generation laundromat operator. Reviewed by the WashBizHub editorial team.

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