C0051 on RAM: How to Diagnose & Fix
LF Wheel Speed Sensor Circuit Range/Performance
1 RAM model · 1 documented issue · $300-$700 repair
C0051 on RAM by model: symptoms, diagnosis and fix
The front hub bearings (wheel bearing assemblies) in the RAM 3500 fail prematurely, particularly on trucks that carry heavy loads in the bed or tow heavy trailers. The factory hub bearings are adequate for unloaded driving but wear rapidly under sustained heavy GVWR/GCWR conditions. 4x4 models are more affected due to the additional stress of the front axle components. Bearing failure typically occurs between 60,000-100,000 miles on heavy-use trucks.
Common Symptoms
- Humming or droning noise that changes with vehicle speed
- Noise increases when turning in one direction
- ABS or traction control warning light
- Play or looseness felt in the front wheel
- Vibration in steering wheel at highway speeds
How to Fix
Replace the front hub bearing assembly (Timken HA590576 or Moog 515162 are highly rated). The hub bearing is a bolt-on unit on these trucks — 4 bolts from the back of the steering knuckle. Replace both sides if one has failed, as the other is likely not far behind. Use ABS-compatible hub assemblies. Budget $300-$700 per side for parts and labor.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Timken HA590467 front hub and bearing
Confirm VIN, drive, cab/chassis, build date, spline and ABS connector.
- Timken HA590628 front hub and bearing
Confirm the exact notes and ABS lead before ordering.
- Genuine Mopar 68292887AA front hub and bearing
2019-2025 Ram 3500 6.4L/6.7L listed configurations; confirm VIN, axle ratio and current supersession, including 68292887AB where applicable.
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Owner tips & cautions
- TipTimken HA590576 and Moog 515162 are the top choices for replacement. Avoid cheap imported hub bearings — they often fail within 20,000 miles on a 3500 that tows.
- TipWhen one front hub bearing goes, replace both sides. If one failed at 80,000 miles, the other is likely at 85% wear and will fail within 10,000-15,000 miles.
C0051 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does C0051 mean on a RAM?
C0051 stands for "LF Wheel Speed Sensor Circuit Range/Performance." C0051 is a chassis/brake code meaning the ABS module is reading an unreliable or out-of-range signal from the Left Front (LF) wheel speed sensor. The sensor counts how fast that wheel turns by sensing teeth on a tone ring, and the computer expects its signal to track logically with the other three wheels. When the LF reading is erratic, intermittent, or doesn't match vehicle speed, the module sets this 'range/performance' code. It generally means the data is present but doesn't make sense, which can disable ABS, traction control, and stability control until corrected. On RAM it is documented across 1 model: 3500.
What are the most common causes of C0051?
The most common causes of C0051 are: Metal debris, rust, or brake dust contaminating the LF sensor or tone ring, Damaged or cracked tone/reluctor ring teeth on the hub or axle, Faulty or worn left front wheel speed sensor, Excessive air gap from a loose sensor or worn wheel bearing, Corroded or loose sensor connector at the wheel, Chafed, pinched, or broken sensor wiring near the strut, Mismatched or incorrect tire size affecting signal plausibility. The specific cause varies by vehicle.
How much does it cost to fix C0051 on a RAM?
Published repair estimates on RAM range from $300 to $700 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for C0051 on a different make?
View C0051 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.