P1720 Code - Vehicle Speed Meter Circuit Malfunction
Quick Answer
When the OBD-II code P1720 appears, it indicates a malfunction in the vehicle speed meter circuit. Common causes include Faulty vehicle speed sensor, Damaged wiring or connectors in the speed meter circuit, Malfunctioning engine control module. 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
- P1720 indicates Vehicle Speed Meter Circuit Malfunction.
- Common causes
- Common causes include Faulty vehicle speed sensor, Damaged wiring or connectors in the speed meter circuit, Malfunctioning engine control module.
- 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 P1720 Description
When the OBD-II code P1720 appears, it indicates a malfunction in the vehicle speed meter circuit. This circuit is responsible for measuring the speed of the vehicle and transmitting that information to the engine control module. A malfunction in this circuit can lead to inaccurate speed readings, which can affect the vehicle's performance and overall drivability.
Common Causes of P1720
- Faulty vehicle speed sensor
- Damaged wiring or connectors in the speed meter circuit
- Malfunctioning engine control module
- Corrosion or debris in the speed sensor connections
- Vehicle speedometer gauge malfunction
Symptoms of P1720
- Inaccurate speedometer readings
- ABS or traction control warning lights illuminated
- Shifting problems
- Engine stalling or hesitation
- Loss of cruise control functionality
How to Fix P1720
- Diagnose the issue by performing a thorough inspection of the speed sensor, wiring, and connectors.
- Test the vehicle speed sensor using a multimeter to check for proper operation.
- Replace the faulty speed sensor or repair any damaged wiring or connectors.
- Reset the engine control module and clear the error code to see if the issue persists.
- Test drive the vehicle to ensure that the speedometer readings are accurate and all systems are functioning correctly.
Cost to Fix P1720
The typical repair costs for a vehicle speed meter circuit malfunction can range from $150 to $500, depending on the extent of the issue and the cost of parts. This estimate includes the cost of a new speed sensor, wiring repairs, and labor charges. It is essential to consult with a qualified mechanic to get an accurate quote for your specific vehicle, as prices can vary based on location and vehicle make and model.
When is the Code Detected?
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Code P1720 Information for Specific Makes
- P1720 BMW — CAN Timeout Control Module
- P1720 Ford — Vehicle Speed Meter Circuit Malfunction
- P1720 Infiniti — Vehicle Speed Meter Circuit Malfunction
- P1720 Mazda — Vehicle Speed Sensor No Signal
- P1720 Nissan — Vehicle Speed Meter Circuit Malfunction
Frequently Asked Questions about P1720 Code
1. What are common symptoms of OBDII code P1720 (Vehicle Speed Meter Circuit Malfunction)?
Common symptoms include erratic speedometer readings, inoperative speedometer, and illumination of the Check Engine Light.
2. What can cause the OBDII code P1720 to trigger?
Possible causes include a faulty vehicle speed sensor, damaged wiring or connectors in the speed sensor circuit, or a malfunctioning instrument cluster.
3. How serious is the P1720 code?
While the vehicle may still be drivable with this code, it is important to address it promptly to ensure accurate speed readings and prevent potential related issues.
4. How can I diagnose the cause of the P1720 code?
Diagnosis typically involves using a scan tool to retrieve the code and checking the vehicle speed sensor, wiring, and connectors for any signs of damage or malfunction.
5. Can I repair the P1720 code myself?
Depending on your skill level and access to tools, you may be able to address this code by replacing the vehicle speed sensor or repairing any damaged wiring or connectors. However, professional help may be needed for more complex issues.
6. Does the P1720 code affect vehicle performance?
While the code itself may not directly impact performance, it can lead to inaccurate speed readings and affect other vehicle systems that rely on speed data for proper operation.
7. How much does it typically cost to repair the P1720 code?
The cost of repairing the P1720 code can vary depending on the specific cause of the issue, but it may range from relatively inexpensive for simple fixes like replacing a sensor to more costly for complex repairs involving wiring or instrument cluster issues.
8. Can driving with the P1720 code cause further damage to the vehicle?
Continuing to drive with this code may not cause immediate harm to the vehicle, but it is best to address it promptly to prevent potential safety risks and ensure accurate speed monitoring.
9. Are there any temporary fixes for the P1720 code?
Temporary fixes such as clearing the code with a scan tool may temporarily turn off the Check Engine Light, but it is crucial to address the underlying issue to prevent recurrence.
10. How long does it take to repair the P1720 code?
The repair time for the P1720 code can vary depending on the cause of the issue and the complexity of the repairs needed. Simple fixes may take less time, while more involved repairs could require additional diagnostics and labor.
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