An F51 code means the washer has lost track of the tub's movement. Nine times out of ten, this is caused by a faulty RPS sensor or a loose wire harness connecting the motor to the main control board.
If you ignore this one, the washer just sits there with a locked lid and does absolutely nothing. Every time you try to start it. I've gone on jobs where somebody kept resetting the code for two or three weeks before calling me, and by then a loose rotor nut had actually worn a groove into the sensor mount. Catch it early and you're usually looking at a $70 part and an hour of your time.
OK so here's what's happening: the control board is expecting a little pulsing signal from the rotor every time the motor turns, and it's getting nothing. So it shuts everything down. I always start by checking that center rotor nut because honestly a loose rotor is responsible for probably a third of the F51 calls I go on. Easy five-minute check that could save you seventy bucks on a sensor you didn't even need.
Most Likely Causes
Based on aggregated repair data, here is the probability breakdown for this error code:
Faulty RPS Sensor65%
Wiring Harness Issues20%
Loose Rotor Nut10%
Main Control Board Failure5%
Symptoms You May Notice
Washer fills and agitates normally, then stops dead right before spin and throws the F51 code
You can hear the motor humming or trying to engage but the drum just sits there not moving
Lid locks and stays locked, display shows F51, and nothing responds to any button press
Error shows up for a cycle or two then goes away, then keeps coming back more and more often until eventually it trips every single time
Machine drains fine but won't spin out, leaving your clothes absolutely soaking wet
Can you reset a Maytag washer to clear the F51 code?
After you fix the root cause, unplug the machine for a full minute. Don't just flip the breaker and immediately flip it back, actually pull the cord and wait. Then plug back in and do the dial sequence: turn left one click, right three clicks, left one click. If you hit it right, the indicator lights will cycle across the panel. Navigate to clear stored codes and confirm it. First full cycle after that should run clean without pulling the old error back up.
Tools Required for Diagnosis
Phillips #2 screwdriver1/4 inch nut driverSocket wrench with 7/16 and 1/2 inch socketsDigital multimeterFlashlight or headlampPutty knifeElectrical contact cleaner spray
Diagnostic Checklist
Follow these steps in order. We start with the easiest external fixes before opening up the machine.
ComponentComponent Under Test
Expected Range0–5 VDC
ConditionIf Open (OL) or infinite, replace component.
Frequently Asked Questions
Can I still use my washer with an F51 code?
Nope. It locks the lid and goes nowhere. That's a safety thing because if the board can't track tub speed it can't prevent a violent out-of-balance spin that could actually walk the machine across the floor. Some people manage to reset it and squeeze out one more cycle before it trips again, but that's just luck. It won't last and you're not fixing anything by resetting it.
Is the RPS sensor the same as the tachometer?
Pretty much, yeah. The RPS counts how many times the rotor magnets pass the sensor to calculate RPM, which is exactly what a tachometer does. Six magnets on the rotor means 60 passes per second equals 600 RPM. That's how the board knows when to advance cycle stages and when something's wrong. Same job, different name depending on whether you're talking to an engineer or a parts counter.
How much does it cost to fix an F51 error?
DIY, the RPS sensor runs about $60-90 for the OEM part. The part number you want for most Bravos models is W10183157 but double-check it against your specific model before you order. If you're calling a tech out, expect $200-300 all-in when you add the service call, an hour of labor, and the shop's markup on the part. It's a pretty reasonable DIY repair if you're comfortable tipping the machine back.
Why does my washer only show F51 during the spin cycle?
Because spin is when the motor's working hardest and producing the most vibration. A connection that holds fine during slow agitation gets rattled loose during high-speed spin. Same story with cracked wires, the flex at 1000+ RPM is way more severe than at agitate speed. Actually if it only trips during spin and not other parts of the cycle, that's a useful clue pointing toward a loose mechanical connection rather than a fully dead sensor.
Does a bad drive belt cause an F51 code?
There's no belt on the Bravos. Direct drive machine, meaning the motor shaft connects straight to the tub with no belt in between. People sometimes get confused because older top-loaders had belts, but the Bravos isn't one of them. So no, a belt can't cause this code because there isn't one to go bad.
What if the F51 comes back after I already replaced the sensor?
First thing I'd check is whether the rotor nut is tight. A new sensor won't fix anything if the rotor's still wobbling around. Second, look at the main board because if the sensor sent a spike through the harness before it died, it might have damaged the board's input circuit too. Third possibility is the replacement sensor was a bad part, which happens more than you'd think with cheap aftermarket stuff.
Models Known to Experience F51 Errors
This repair applies to most Maytag washers with this error code. Common model numbers include: