Ford Dtc C0051:67-68 – Fixing Steering Angle Sensor Faults
The Ford diagnostic trouble code C0051:67-68 indicates a communication or data mismatch within the Steering Wheel Position Sensor system, often triggering the “Service AdvanceTrac” warning. Resolving this fault typically requires a combination of steering angle recalibration, alignment checks, or inspecting the clock spring and steering rack connections.
Dealing with a modern Ford vehicle means managing a complex network of electronic sensors that keep you safe on the road. When your dashboard displays a traction control light and your scanner shows a ford dtc c0051:67-68, it is easy to feel overwhelmed by the technical jargon. Most drivers encounter this after a simple battery change, a suspension lift, or even hitting a deep pothole during an off-road excursion.
We understand that you want your vehicle back to its peak performance without spending thousands at the dealership. This guide provides a clear roadmap to diagnosing and fixing the issue, whether you are a weekend DIYer or a dedicated off-roader. We will walk through the tools you need, the safety steps required, and the specific calibration procedures that clear the light for good.
By the end of this article, you will have a professional-level understanding of how your steering system communicates with the ABS module. We will preview the most common hardware failures and the software-based resets that often solve the problem in minutes. Let’s dive into the specifics of the steering angle sensor and get your Ford back in alignment.
Understanding the Meaning of ford dtc c0051:67-68
The code C0051 refers specifically to the Steering Wheel Position Sensor (SWPS), which is a critical component of the Electronic Power Assisted Steering (EPAS) system. This sensor tells the car’s computer exactly where the steering wheel is pointed so the AdvanceTrac system can intervene if the car begins to skid. When the computer detects a problem, it appends sub-codes, known as “fault bytes,” to help narrow down the issue.
The:67 suffix stands for “Signal Incorrect After Event,” which usually means the sensor was working fine until a specific incident occurred. This “event” could be a sudden jolt to the suspension, a dead battery, or a physical change in the steering geometry. The computer knows the wheels are straight because of the wheel speed sensors, but the steering sensor says the wheel is turned, creating a logical conflict.
The:68 suffix represents “Signal Incoherent,” which is slightly different and often more technical. This means the data coming from the sensor is “noisy” or doesn’t make sense within the programmed parameters. When you see ford dtc c0051:67-68, the vehicle is essentially telling you that it no longer trusts the steering data and has disabled safety features like Stability Control and Hill Start Assist to prevent accidental braking.
The Role of the Steering Angle Sensor (SAS)
The SAS is located either on the steering column or integrated into the steering rack, depending on your specific Ford model. It measures the rate of turn, the steering angle, and the direction of the steering wheel. This data is shared across the high-speed CAN bus with the ABS module and the Powertrain Control Module (PCM).
If you are driving an F-150 or an Explorer, this sensor is vital for Trailer Backup Assist and Lane Keeping systems. When the sensor fails or loses its “zero point,” these high-tech features will immediately go offline. Understanding this helps you realize that the code isn’t just a nuisance light; it is a signal that your driver-assist features are currently disabled.
Common Symptoms of a Faulty Steering Angle Sensor
The most obvious sign of a ford dtc c0051:67-68 error is the illumination of the traction control icon—a car with squiggly lines behind it. You might also see a text prompt on the productivity screen saying “Service AdvanceTrac” or “Steering Assist Fault Service Required.” These warnings usually appear immediately upon starting the engine or after making a sharp turn.
Drivers often report that the steering feels “heavier” or less responsive than usual. Since the EPAS system relies on steering position to provide the correct amount of torque at different speeds, a sensor fault can cause the system into a “limp mode.” In this state, the variable assist might be disabled, making low-speed parking maneuvers much more difficult.
Another common symptom is the failure of the turn signals to cancel automatically after a turn. The steering column uses the position sensor data to know when you have completed a maneuver. If the sensor is sending “incoherent” data, the mechanical or electronic cancellation mechanism may fail to trigger, leaving your blinker running indefinitely.
Impact on Off-Road Performance
For the off-road community, this code is particularly troublesome because it often disables the electronic locking differential or Hill Descent Control. If the vehicle doesn’t know which way the wheels are pointed, it cannot safely manage wheel spin across an axle. This can leave you in a vulnerable position when navigating technical trails or steep inclines.
Furthermore, if you have recently installed a leveling kit or larger tires, your steering geometry has changed. This physical change is a frequent trigger for the ford dtc c0051:67-68 code. The system detects that you are driving straight, but the steering wheel is slightly off-center to compensate for the new suspension height, leading to a data mismatch.
Root Causes: Why Your Ford Throws This Specific Code
One of the most frequent causes of this code is a poor wheel alignment. If your “toe” setting is out of specification, you must hold the steering wheel at an angle to drive in a straight line. The ABS module compares the wheel speed sensors (which show all four wheels moving at the same speed) to the steering sensor, and it correctly concludes that the data is incoherent.
Electrical issues are another primary culprit, especially in older Ford vehicles or those used in harsh environments. A weak battery or a failing alternator can cause “voltage drops” that reset the sensor’s memory. When the voltage dips during an engine crank, the SAS may lose its calibration, resulting in the:67 “Signal Incorrect After Event” fault byte.
Hardware failure, specifically the clock spring, is a common mechanical cause. The clock spring is a spiral-wound ribbon cable inside the steering column that allows the steering wheel to turn while maintaining an electrical connection. If this cable frays or breaks, the signal from the steering angle sensor will be interrupted or “noisy,” triggering the:68 sub-code.
- Mechanical Misalignment: Steering wheel not centered while driving straight.
- Sensor Calibration Loss: Caused by battery disconnection or PCM updates.
- Internal Rack Failure: Issues within the Electronic Power Steering rack itself.
- Damaged Wiring: Corroded connectors at the base of the steering column.
Step-by-Step Diagnostic Process for DIYers
Before you start buying expensive parts, you need a systematic approach to diagnosis. Start by checking the simplest variables first. Verify your tire pressures are even across the front axle, as a low tire can cause a slight pull that mimics a steering sensor error. Once that is confirmed, perform a visual inspection of the steering linkage and tie rods for any signs of damage or play.
Next, you will need a diagnostic tool that can read manufacturer-specific Ford codes. A basic $20 scanner might show a generic “P” code, but it won’t show the ford dtc c0051:67-68 details. We recommend using FORScan with a high-quality OBDII adapter or a professional-grade scan tool like an Autel or Snap-On unit. This allows you to look at “Live Data” from the ABS and PSCM (Power Steering Control Module).
With your scanner connected, navigate to the live data stream and find the parameter for “Steering Wheel Angle.” With the wheels pointed perfectly straight, the value should be 0 degrees (plus or minus 2 degrees). Slowly turn the wheel from lock to lock. The numbers should increase and decrease smoothly without jumping or dropping to zero suddenly. If the numbers jump, the sensor or clock spring is likely defective.
Testing the Clock Spring
If the live data is erratic, try tilting the steering wheel up and down or telescoping it in and out while watching the scanner. If the steering angle value changes or the ford dtc c0051:67-68 code reappears when you move the column, you have a wiring or clock spring issue. This is a common failure point on Fords that are frequently adjusted for different drivers.
Always exercise caution when working around the steering column. The airbag system (SRS) is housed in the steering wheel. Before inspecting any connectors or removing the wheel, disconnect the negative battery terminal and wait at least ten minutes for the backup capacitors to discharge. Safety is the priority when dealing with pyrotechnic components.
How to Calibrate the Steering Angle Sensor (SAS)
In many cases, the sensor isn’t broken; it just needs to be “re-learned.” This is common after a battery replacement or an alignment. The calibration process tells the computer exactly what “center” looks like. To do this, you will need your scan tool. Most modern Ford vehicles require a software-initiated reset rather than a manual “turning the wheel” procedure used on older cars.
Using FORScan or a similar tool, look for the “Service Functions” or “Maintenance” menu. You are looking for a procedure labeled “Steering Angle Sensor Calibration” or “SAS Reset.” Ensure the vehicle is on a level surface with the front wheels pointed straight ahead. Follow the on-screen prompts, which usually involve turning the wheel to the left, then the right, and back to center.
If the software reset fails to clear the ford dtc c0051:67-68 code, it is often because the mechanical alignment is too far out of spec. The computer will refuse to calibrate if it detects that the wheel speed sensors and the steering sensor are too far apart. In this scenario, you must get a professional four-wheel alignment before the electronic reset will “take.”
The “Drive Cycle” Reset
Some Ford models can recalibrate the SAS through a specific driving pattern. This usually involves driving the vehicle on a straight, flat road at speeds above 20 mph for several minutes. While driving, avoid sharp turns or rapid acceleration. The ABS module uses this time to compare the wheel speeds and “self-correct” the steering center point. This is often the final step after a physical alignment.
If you are an off-roader who has just aired up after a trail, your sensors might be confused by the change in tire diameter and pressure. Driving a few miles on the pavement often clears these temporary “incoherent” codes. However, if the AdvanceTrac light stays on after ten miles of highway driving, a manual calibration is necessary.
Hardware Fixes: Clock Springs and Steering Racks
If calibration doesn’t work and your live data shows a dead sensor, you are likely looking at a hardware replacement. On many Ford vehicles, the steering angle sensor is part of the Clock Spring assembly. Replacing the clock spring is a moderate DIY task that requires a steering wheel puller and a few basic hand tools. Remember to mark the position of the steering wheel on the shaft to ensure it goes back on perfectly straight.
On newer models with EPAS, the sensor may be integrated into the steering rack itself. If the internal sensor fails on these units, Ford often recommends replacing the entire steering rack. This is a significant repair, often costing between $1,200 and $2,000. Before committing to a rack replacement, always double-check the wiring harness that plugs into the rack, as road debris can often damage these exposed wires.
When installing a new clock spring or rack, you must perform a “Programmable Module Installation” (PMI) or a configuration reset. The new hardware needs to be introduced to the vehicle’s computer network. Without this step, the ford dtc c0051:67-68 code will remain active, even though the physical part is brand new and functional.
- Clock Spring Replacement: Fixes “Incoherent” signals and non-functioning wheel buttons.
- Connector Cleaning: Use electrical contact cleaner on the PSCM plugs.
- Battery Health: Ensure the battery is holding at least 12.6 volts at rest.
- Module Updates: Check for TSBs (Technical Service Bulletins) regarding PSCM software updates.
Frequently Asked Questions About ford dtc c0051:67-68
Can I drive with the C0051:67-68 code active?
Yes, the vehicle is generally safe to drive, but your stability control, traction control, and anti-lock braking features may be disabled or limited. This increases the risk of skidding in wet or icy conditions. Additionally, your steering assist may feel inconsistent, so you should address the issue as soon as possible to ensure full safety functionality.
Will a simple wheel alignment fix this code?
If the code was triggered because your steering wheel is crooked while driving straight, a professional alignment is the first and most important step. However, after the alignment is performed, you will likely still need to use a scan tool to perform the SAS calibration to tell the computer that the mechanical center is now correct.
Why did this code appear after I disconnected my battery?
When the battery is disconnected, some Ford modules lose their “learned” data. The steering angle sensor is sensitive to voltage interruptions. When you reconnect the battery, the system may require a short drive or a manual recalibration to re-establish the zero-point of the steering wheel, resulting in a temporary ford dtc c0051:67-68 fault.
Is the steering angle sensor the same as the clock spring?
In many Ford models, they are separate components but are housed in the same area of the steering column. In some newer designs, the sensor is an electronic chip mounted directly onto the clock spring’s housing. If you are replacing one, it is often wise to inspect the other, as they are both disturbed during the disassembly of the steering column.
Can I use FORScan to fix this code?
Yes, FORScan is one of the most effective tools for DIY Ford owners. It can read the specific:67 and:68 sub-codes, view live steering data, and perform the necessary “Steering Angle Sensor Calibration” service function. It is a cost-effective alternative to the expensive IDS (Integrated Diagnostic System) software used by Ford dealerships.
Final Thoughts on Resolving Steering Faults
Dealing with the ford dtc c0051:67-68 doesn’t have to be a nightmare. By understanding that this code is a bridge between your mechanical alignment and your electronic safety systems, you can take a logical approach to the fix. Start with the basics: check your alignment, verify your battery health, and use a quality scan tool to look at the sensor’s live data.
Whether you are recalibrating after a lift kit installation or replacing a worn-out clock spring, the key is precision. Ensure your wheels are dead-straight before hitting that “reset” button in your software. Taking the time to do it right ensures that your AdvanceTrac system will be there to protect you when the road gets slippery or the trail gets tough.
Don’t let a dashboard light keep you from enjoying your Ford’s capabilities. With the right tools and a safety-first mindset, you can clear that code and get back to the road with confidence. Stay safe, keep your steering true, and enjoy the drive!
- Smallest Chevrolet Car – Maximizing Utility And Efficiency - September 28, 2026
- Chevrolet Small Car Models – A Practical Owner’S Guide To Maintenance - September 28, 2026
- Chevrolet Hhr Miles Per Gallon – Real-World Efficiency And Maintenance - September 28, 2026