Frigidaire Factory Service ManualFault Code: E52

Frigidaire Washer Error Code E52: Drive Motor Tachometer Generator Signal Missing

The motor control board (MCB) energizes the drive motor but receives zero rotational speed feedback pulses from the motor tachometer generator coil.

Target Appliance

washer

OEM Certified Technical Diagnostic Tree

Diagnostic Tool Required

Digital Multimeter

Measure Ohms resistance, continuity & line voltage.

Triage Complexity

Advanced Diagnostic

4 Sequential manufacturer inspection branches.

Sequential Factory Diagnostic Tree

Perform each diagnostic step in order. Disconnect electrical power and turn off utility shutoffs before inspecting wiring or internal mechanical assemblies.

Step 1: Physical & Electrical InspectionMultimeter & Visual

Action: Disconnect power, remove rear service panel, and inspect the drive belt and motor pulley.

Bench Test: Rotate wash drum by hand and verify motor pulley spins with the tub belt.

Expected Standard: Smooth rotation; belt intact and centered on pulleys.

If Failed / Out of Spec:

Replace shredded or stretched drive belt (134051000).

If Passed:

Proceed to Step 2.

Step 2: Physical & Electrical InspectionMultimeter & Visual

Action: Disconnect motor wiring harness and inspect the tachometer generator coil mounted on the rear of the motor shaft.

Bench Test: Measure electrical resistance across the two tachometer generator coil pins.

Expected Standard: Normal tachometer coil resistance is between 105 and 130 ohms (or ~180 ohms on certain series).

If Failed / Out of Spec:

Tachometer coil reads open circuit (0L) or shorted. Replace drive motor assembly (134883400).

If Passed:

Proceed to Step 3.

Step 3: Physical & Electrical InspectionMultimeter & Visual

Action: Spin motor shaft by hand while measuring AC millivolts output across the tachometer pins.

Bench Test: Multimeter set to AC millivolts (mV AC); rotate motor pulley briskly.

Expected Standard: Tachometer generates 1.5V to 3.0V AC proportional to rotation speed.

If Failed / Out of Spec:

Loose or cracked tachometer magnet on motor shaft. Replace drive motor (134883400).

If Passed:

Proceed to Step 4.

Step 4: Physical & Electrical InspectionMultimeter & Visual

Action: Inspect motor control inverter board (MCB) located in lower cabinet base.

Bench Test: Check harness from motor to MCB and inspect MCB for blown capacitors or burnt traces.

Expected Standard: Clean wiring harness, pristine MCB circuit board.

If Failed / Out of Spec:

Replace motor control inverter board (134743500).

If Passed:

Replace main electronic control board (137006000).

Verified OEM Replacement Parts

Cross-referenced factory part numbers for Frigidaire washer error code E52. Always replace defective components with authentic OEM parts to maintain UL safety certification.

Component Name	OEM Part Number	Manufacturer	Status
Drive Motor Assembly with Tachometer	`134883400`	Frigidaire	Direct Fit OEM
Motor Control Inverter Board (MCB)	`134743500`	Frigidaire	Direct Fit OEM
Heavy-Duty Multi-Rib Drive Belt	`134051000`	Frigidaire	Direct Fit OEM

Need Local Diagnostic Assistance?

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If multimeter testing reveals an internal short, locked motor, or fried control board, let an experienced local technician complete the repair with certified OEM replacement parts.

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Frequently Asked Questions: Frigidaire E52

What causes Frigidaire washer error code E52?

The motor control board (MCB) energizes the drive motor but receives zero rotational speed feedback pulses from the motor tachometer generator coil.

Can I reset the E52 code by unplugging the washer?

While disconnecting power for 5 minutes may temporarily clear the display control memory, the E52 code will reoccur once the microcontroller detects the mechanical or electrical fault again.

What OEM replacement parts are required for Frigidaire E52?

Common OEM replacement components include: Drive Motor Assembly with Tachometer (OEM #134883400), Motor Control Inverter Board (MCB) (OEM #134743500), Heavy-Duty Multi-Rib Drive Belt (OEM #134051000).