AutoCodes – Honda – P0720 2008 Honda Accord

P0720 2008 Honda Accord Code - Output Shaft Speed Sensor Circuit Fault

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 2008 Honda Accord indicates Output Shaft Speed Sensor Circuit Fault.
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.

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Code Popularity 11,317

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0720 2008 Honda Accord Description

The speed sensor detects the revolution of the idler gear parking pawl lock gear and emits a pulse signal. The pulse signal is sent to the Transmission Control Module (TCM) which converts it into vehicle speed.

OBDII Code P0720 2008 Honda Accord - Output Shaft Speed Sensor Circuit Fault - AutoCodes.com — P0720 2008 Honda Accord Code - Output Shaft Speed Sensor Circuit Fault

What does this mean?

What are the Possible Causes of the DTC P0720 2008 Honda Accord?

Faulty Speed Sensor
Speed Sensor harness is open or shorted
Speed Sensor circuit poor electrical connection

How to Fix the DTC P0720 2008 Honda Accord?

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 2008 Honda Accord 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 P0720 2008 Honda Accord code?

Need more information on how to fix the P0720 2008 Honda Accord code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0720 2008 Honda Accord code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0720 2008 Honda Accord Code

1. What are common symptoms of OBDII code P0720 in a 2008 Honda Accord?

- Common symptoms include erratic or non-functioning speedometer, harsh shifting, and the transmission going into failsafe mode.

2. What does the OBDII code P0720 indicate in a 2008 Honda Accord?

- OBDII code P0720 indicates a fault in the output shaft speed sensor circuit.

3. What are possible causes of OBDII code P0720 in a 2008 Honda Accord?

- Possible causes include a faulty output shaft speed sensor, damaged sensor wiring, or a malfunctioning transmission control module.

4. How can I diagnose the OBDII code P0720 on my 2008 Honda Accord?

- You can diagnose the code by performing a visual inspection of the sensor and its wiring, checking for proper sensor operation with a multimeter, and scanning the vehicle's computer for additional fault codes.

5. Can I still drive my 2008 Honda Accord with the OBDII code P0720?

- It is not recommended to drive the vehicle with the code present, as it can lead to transmission issues and potential safety hazards.

6. Is it possible to reset the OBDII code P0720 in a 2008 Honda Accord?

- While you can clear the code using an OBDII scanner, it is crucial to address the underlying issue causing the fault to prevent it from reoccurring.

7. How much does it typically cost to repair OBDII code P0720 in a 2008 Honda Accord?

- The cost of repairing the code can vary depending on the specific cause, but it may range from $200 to $500 for parts and labor.

8. Can a DIY enthusiast fix OBDII code P0720 in a 2008 Honda Accord?

- Depending on your skill level and access to tools, you may be able to replace the output shaft speed sensor yourself. However, diagnosing and repairing wiring or module issues may require professional expertise.

9. How urgent is it to address OBDII code P0720 in a 2008 Honda Accord?

- It is advisable to address the issue promptly to prevent further damage to the transmission and ensure the vehicle operates safely and efficiently.

10. Will fixing OBDII code P0720 improve the performance of my 2008 Honda Accord?

- Yes, resolving the code will restore proper transmission function, improve shifting quality, and eliminate related symptoms such as speedometer issues.