U2473 Code - Unexpected Vehicle Speed
Quick Answer
The U2473 code indicates that the vehicle's onboard computer has detected an unexpected vehicle speed. Common causes include Faulty wheel speed sensors, Loose or damaged wiring harness connecting speed sensors, Malfunctioning transmission speed sensor. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- U2473 indicates Unexpected Vehicle Speed.
- Common causes
- Common causes include Faulty wheel speed sensors, Loose or damaged wiring harness connecting speed sensors, Malfunctioning transmission speed sensor.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code U2473 Description
The U2473 code indicates that the vehicle's onboard computer has detected an unexpected vehicle speed. This means that the speed at which the vehicle is moving does not align with the input signals from various sensors, such as the wheel speed sensors, throttle position sensor, or transmission speed sensors. This discrepancy can lead to erratic behavior in the vehicle's performance, affecting its drivability and safety.
Common Causes of U2473
- Faulty wheel speed sensors
- Loose or damaged wiring harness connecting speed sensors
- Malfunctioning transmission speed sensor
- Electronic control module (ECM) software glitch
- Traction control system malfunction
Symptoms of U2473
- Check engine light is illuminated
- Inaccurate speedometer readings
- Loss of power or acceleration
- Vehicle stalls or hesitates during acceleration
- Unusual noises coming from the transmission or drivetrain
How to Fix U2473
- Diagnose the issue using a professional OBD-II scanner to retrieve the specific trouble codes and data related to the unexpected vehicle speed.
- Inspect and test the wheel speed sensors, transmission speed sensor, and related wiring harness for any faults or damage.
- Check the ECM for any software updates or glitches that may be causing the issue.
- Replace faulty sensors or repair wiring as needed to correct the unexpected vehicle speed.
- Clear the trouble codes, reset the vehicle's computer, and test drive to ensure the issue has been resolved.
Cost to Fix U2473
The cost of repairing the U2473 code can vary depending on the specific cause of the issue. On average, the repair costs for addressing unexpected vehicle speed can range from $200 to $500, including parts and labor. However, it's important to note that diagnosis time and labor rates at auto repair shops can vary significantly based on factors such as location, vehicle make and model, and engine type. It's recommended to check with local auto repair shops for a more accurate estimate.
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Code U2473 Information for Specific Makes
- U2473 Ford — Unexpected Vehicle Speed
- U2473 Lincoln — Unexpected Vehicle Speed
- U2473 Mercury — Unexpected Vehicle Speed
Frequently Asked Questions about U2473 Code
1. What are the common symptoms of OBDII code U2473 (Unexpected Vehicle Speed)?
- Common symptoms include erratic speedometer readings, sudden acceleration or deceleration, and transmission shifting issues.
2. What could be causing OBDII code U2473 to trigger?
- Possible causes include a malfunctioning wheel speed sensor, wiring issues, a faulty ABS module, or a problem with the vehicle's transmission control module.
3. How can I diagnose the root cause of OBDII code U2473?
- Diagnosing the issue involves using a scan tool to retrieve the code, checking the wheel speed sensors for proper operation, inspecting the wiring for damage, and testing the ABS and transmission control modules.
4. Is it safe to continue driving with OBDII code U2473 present?
- It is not recommended to drive the vehicle with this code active, as it can lead to unpredictable vehicle behavior and potential safety hazards.
5. Can I reset OBDII code U2473 on my own?
- While you can clear the code using a scan tool, it is important to address the underlying issue causing the code to prevent it from recurring.
6. What are some repair tips for fixing OBDII code U2473?
- Repair tips may include replacing a faulty wheel speed sensor, repairing damaged wiring, recalibrating the ABS module, or reprogramming the transmission control module.
7. How much does it typically cost to repair OBDII code U2473?
- The cost of repairing this code can vary depending on the specific cause and the labor rates of the repair shop. It is recommended to get a diagnostic evaluation to determine the exact cost.
8. Will OBDII code U2473 cause my vehicle to fail an emissions test?
- The presence of this code may indicate underlying issues that can affect the vehicle's emissions system, potentially leading to a failed emissions test.
9. Can a DIY enthusiast fix OBDII code U2473 at home?
- Depending on the cause of the code, some DIY enthusiasts with the necessary tools and knowledge may be able to address the issue themselves, but more complex repairs may require professional assistance.
10. How can I prevent OBDII code U2473 from recurring in the future?
- Regular maintenance, such as checking and replacing wheel speed sensors as needed, inspecting wiring for damage, and addressing any ABS or transmission module issues promptly, can help prevent the code from recurring.
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