U2473 Mercury Code - Unexpected Vehicle Speed
Quick Answer
The primary source of vehicle location for the navigation system is the Audio Control Module (ACM) receiving the position signal through the Global Positioning System (GPS) antenna. Common causes include Vehicle Speed Signal, Faulty Audio Control Module (ACM), Audio Control Module (ACM) harness is open or shorted. 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 Mercury indicates Unexpected Vehicle Speed.
- Common causes
- Common causes include Vehicle Speed Signal, Faulty Audio Control Module (ACM), Audio Control Module (ACM) harness is open or shorted.
- 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.
Code U2473 Mercury Description
In addition, the ACM receives the wheel pulse signal from the Instrument Cluster (IC) (which gateways the signal from the Anti-Lock Brake System (ABS) module). This secondary signal is used to calculate vehicle position when the GPS signal is lost. It also supports the adaptive learning function of the ACM, whereby the ACM can compensate for long-term differences between the GPS signal location, and the actual distance traveled by the vehicle. The Diagnostic Trouble Code (DTC) will set when the calculated vehicle distance traveled based on the wheel pulse signal does not agree with the GPS antenna location.
What are the Possible Causes of the DTC U2473 Mercury?
- Vehicle Speed Signal
- Faulty Audio Control Module (ACM)
- Audio Control Module (ACM) harness is open or shorted
- Audio Control Module (ACM) circuit poor electrical connection
How to Fix the DTC U2473 Mercury?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the U2473 Mercury code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the U2473 Mercury code?
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Frequently Asked Questions about U2473 Mercury Code
1. What are the common symptoms of OBDII code U2473 (Unexpected Vehicle Speed) in a Mercury?
When this code is triggered, you may experience erratic speedometer readings, harsh shifting of gears, and potential loss of power in the vehicle.
2. What are the possible causes of OBDII code U2473 in a Mercury?
The code U2473 usually indicates a fault with the vehicle speed sensor, damaged wiring or connectors related to the sensor, or a malfunction in the vehicle's transmission system.
3. How can I diagnose the OBDII code U2473 in my Mercury?
Diagnosing code U2473 typically involves using an OBDII scanner to retrieve the code, checking the vehicle speed sensor for proper operation, inspecting the wiring for any damage, and testing the transmission system for issues.
4. Can a faulty vehicle speed sensor cause code U2473 in a Mercury?
Yes, a faulty vehicle speed sensor is a common cause of code U2473 in a Mercury. The sensor may be sending incorrect signals to the vehicle's computer, leading to unexpected vehicle speed readings.
5. Are there any simple repair tips for resolving OBDII code U2473 in a Mercury?
If the issue is related to a faulty vehicle speed sensor, replacing the sensor with a new, quality part and ensuring proper installation can often resolve the U2473 code in a Mercury.
6. Is it safe to continue driving my Mercury with OBDII code U2473 present?
It is not recommended to drive your Mercury with the U2473 code present, as it can lead to safety hazards due to inaccurate speed readings and potential transmission issues. It is best to address the problem promptly.
7. Can weather or road conditions trigger OBDII code U2473 in a Mercury?
While rare, extreme weather conditions or rough road conditions could potentially affect the vehicle speed sensor or related components, leading to the triggering of code U2473 in a Mercury.
8. How much does it typically cost to repair OBDII code U2473 in a Mercury?
The cost of repairing code U2473 in a Mercury can vary depending on the exact cause of the issue, the labor rates in your area, and whether you choose to address the problem yourself or take it to a professional mechanic.
9. Will resetting the OBDII system clear the U2473 code in my Mercury?
Resetting the OBDII system may temporarily clear the U2473 code, but if the underlying issue (such as a faulty vehicle speed sensor) is not addressed, the code is likely to reappear once the problem is detected again.
10. Can code U2473 in a Mercury affect fuel efficiency?
Yes, since code U2473 can lead to transmission issues and erratic speedometer readings, it can potentially impact fuel efficiency in a Mercury by causing the engine to operate less efficiently.
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