AutoCodes – Generic – P1735

P1735 Code - Speed Sensor Reference High

Quick Answer

P1735 indicates Speed Sensor Reference High. Common causes include FaultySpeed 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: P1735 indicates Speed Sensor Reference High.
Common causes: Common causes include FaultySpeed 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 22,019

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 Sep 13, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1735 Description

OBDII Code P1735 - Speed Sensor Reference High - AutoCodes.com — P1735 Code - Speed Sensor Reference High

What does this mean?

What are the Possible Causes of the DTC P1735?

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

How to Fix the DTC P1735?

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 P1735 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 P1735 code?

Need more information on how to fix the P1735 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1735 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1735 Hyundai — Speed Sensor Reference High

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 P1735 Code

1. What are the common symptoms of OBDII code P1735 (Speed Sensor Reference High)?

- Common symptoms include erratic speedometer readings, issues with cruise control functionality, and potential transmission shifting problems.

2. What are the possible causes of OBDII code P1735?

- The code P1735 is typically triggered by a faulty speed sensor, damaged wiring or connectors related to the speed sensor, or issues with the vehicle's powertrain control module (PCM).

3. How can I diagnose the source of OBDII code P1735?

- Diagnosing the code involves using a scan tool to retrieve the specific code, checking the speed sensor and its circuit for faults, inspecting related wiring and connectors for damage, and testing the PCM for proper functionality.

4. Is it safe to continue driving with OBDII code P1735 present?

- It is not recommended to continue driving with the P1735 code active, as it can lead to potential transmission issues and affect the vehicle's overall performance and safety.

5. Can OBDII code P1735 be cleared/reset without fixing the underlying issue?

- While the code can be cleared/reset using a scan tool, it is crucial to address the root cause of the problem to prevent the code from reoccurring.

6. What are some repair tips for fixing OBDII code P1735?

- Repair tips include inspecting and replacing the faulty speed sensor, repairing damaged wiring or connectors, and ensuring proper connection and communication with the PCM.

7. Does OBDII code P1735 affect fuel efficiency?

- While the code itself may not directly impact fuel efficiency, unresolved issues related to the speed sensor can lead to overall performance issues that may affect fuel efficiency.

8. Can a DIY enthusiast fix OBDII code P1735 at home?

- Depending on the root cause of the code, DIY enthusiasts with the necessary tools and knowledge may be able to address the issue at home by replacing the speed sensor or repairing damaged wiring.

9. How much does it typically cost to repair OBDII code P1735 at a mechanic or dealership?

- The cost of repairing OBDII code P1735 can vary depending on the underlying issue, but it may range from $100 to $300 for parts and labor at a mechanic or dealership.

10. Will fixing OBDII code P1735 resolve all related vehicle issues?

- Fixing the P1735 code may resolve the specific speed sensor reference high problem, but it is essential to address any other related issues that may have been caused by the initial fault.