P0720 Hyundai Code - Output Speed Sensor Error
Quick Answer
The speed sensor detects the revolution of the idler gear parking pawl lock gear and emits a pulse signal. Common causes include Faulty Speed Sensor, Speed Sensor harness is open or shorted, Speed Sensor circuit poor electrical connection. 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
- P0720 Hyundai indicates Output Speed Sensor Error.
- Common causes
- Common causes include Faulty Speed Sensor, Speed Sensor harness is open or shorted, Speed Sensor circuit poor electrical connection.
- 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 P0720 Hyundai Description
Sensor Location: 1999-2006 Hyundai Sonata; 2001-2007 Hyundai Elentra; 2001-2007 Hyundai Santa Fe; 2001 Hyundai XG; 2002-2005 Hyundai XG350; 2003 Hyundai Tiburon; 2005-2009 Hyundai Tucson; 2006 Hyundai Azera; 2007 Hyundai Entourage
What are the Possible Causes of the DTC P0720 Hyundai?
- Faulty Speed Sensor
- Speed Sensor harness is open or shorted
- Speed Sensor circuit poor electrical connection
How to Fix the DTC P0720 Hyundai?
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 P0720 Hyundai 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 P0720 Hyundai Code
1. What does the OBDII code P0720 mean on a Hyundai?
P0720 indicates an Output Speed Sensor Error, meaning the vehicle's transmission control module (TCM) is not receiving accurate data from the output speed sensor.
2. What are the common symptoms of a P0720 code on a Hyundai?
Symptoms may include erratic shifting, the transmission staying in one gear (limp mode), a malfunctioning speedometer, or the check engine light being illuminated.
3. What causes the P0720 code on a Hyundai?
Common causes include a faulty output speed sensor, damaged wiring or connectors, a malfunctioning TCM, or mechanical issues within the transmission.
4. Can I drive my Hyundai with a P0720 code?
It is not recommended to drive with this code, as it can lead to poor transmission performance and potential long-term damage to the transmission.
5. How do I diagnose a P0720 code on my Hyundai?
Diagnosis involves checking the output speed sensor for proper operation, inspecting the wiring and connectors for damage, and using a scan tool to monitor the sensor's data.
6. How do I fix a P0720 code on a Hyundai?
Repairs may include replacing the faulty output speed sensor, repairing damaged wiring or connectors, or reprogramming/replacing the transmission control module (TCM) if necessary.
7. How much does it cost to fix the P0720 code on a Hyundai?
The cost depends on the issue. Replacing the output speed sensor typically costs $100–$300, while more extensive repairs like TCM replacement can exceed $1,000.
8. Can a faulty output speed sensor cause transmission damage?
Yes, if left unresolved, a faulty sensor can cause improper shifting and strain on the transmission, potentially leading to long-term damage.
9. Will clearing the P0720 code fix the problem?
Clearing the code will turn off the check engine light temporarily, but the issue will persist unless the underlying problem is addressed.
10. Is the P0720 code specific to Hyundai vehicles?
No, the P0720 code is a generic OBDII code applicable to all makes and models, but the specific causes and symptoms can vary by vehicle, including Hyundai.
Discuss the causes and fixes for P0720 Hyundai OBDII Code
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I am having this error code on my 2005 santa fe with 3.5 lt and AWD the transmission is 5 speed automatic with manual override and is no longing shifting properly My transmission fluid is BLACKISH and smells burnt and it wont shift out of 1st until you push it and then CLUNK feels like i was REAR ENDED then it goes into 3rd and stays there until i shut it off and back to 1st gear I did check my tranny fluid which was low added 2 quarts it shifted smoothly into 2nd then stayed there next day back to CLUNK AGAIN . I am waiting for my mechanic to completely flush and replace the transmission fluid and filter ,put a new input /output ( revolution ? ) sensor(s) still confuses between the ABS speed sensor and REVOLUTION sensor but at least im aware of the difference and will do wire harness just for good measure a with the pcv valve. Ill keep you posted as to how it went. But im not holding my breath on this car ive replaced EVERYTHING ELSE from tires up and still need cats next if anyone needs a whole lot of BRAND NEW 05 SANTA FE PARTS reply below i cant junk it cant sell it cant drive it and have run put of patience money or trustworthy mechanics but spent too much already to walk away its in monterey bay, CA
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