U2473 Lincoln 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 Lincoln 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 Lincoln 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 Lincoln?
- 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 Lincoln?
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 Lincoln 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.
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Frequently Asked Questions about U2473 Lincoln Code
1. What are the common symptoms of OBDII code U2473 in a Lincoln vehicle?
- Common symptoms include erratic vehicle speed readings on the instrument cluster, incorrect speedometer readings, and intermittent speedometer failure.
2. What could cause the OBDII code U2473 Unexpected Vehicle Speed in a Lincoln?
- The code U2473 can be triggered by issues such as a faulty speed sensor, damaged wiring harness, or a malfunctioning instrument cluster.
3. How can I diagnose the OBDII code U2473 in my Lincoln for Unexpected Vehicle Speed?
- Diagnosis involves using a scan tool to retrieve the code, checking the speed sensor's signal, inspecting the wiring for damage, and testing the instrument cluster for proper operation.
4. Can a DIY enthusiast repair the OBDII code U2473 on a Lincoln?
- Depending on the cause, a DIY enthusiast may be able to repair the issue by replacing a faulty speed sensor, repairing damaged wiring, or recalibrating the instrument cluster.
5. Is it safe to drive my Lincoln with the OBDII code U2473 Unexpected Vehicle Speed?
- It is not recommended to drive the vehicle with the U2473 code present, as it can affect the speedometer accuracy and potentially lead to unsafe driving conditions.
6. How much does it typically cost to repair the OBDII code U2473 in a Lincoln?
- Repair costs can vary depending on the underlying cause, but replacing a speed sensor or repairing wiring issues may cost between $100 to $300, excluding labor charges.
7. Can a low battery voltage trigger the OBDII code U2473 Unexpected Vehicle Speed in a Lincoln?
- Yes, low battery voltage can sometimes cause erratic speedometer readings and trigger the U2473 code, so it's essential to ensure the battery is in good condition.
8. Will resetting the OBDII code U2473 on my Lincoln make the issue go away?
- Resetting the code may temporarily clear the warning light, but if the underlying problem persists, the code is likely to return until the root cause is addressed.
9. How long does it take to repair the OBDII code U2473 Unexpected Vehicle Speed in a Lincoln?
- The repair time can vary based on the complexity of the issue, but a straightforward repair like replacing a speed sensor can typically be completed within an hour or two.
10. Can a mechanic perform a software update to resolve the OBDII code U2473 Unexpected Vehicle Speed in a Lincoln?
- Yes, a mechanic may recommend performing a software update on the vehicle's control modules to address the U2473 code related to unexpected vehicle speed readings.
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