AutoCodes – Generic – C1730

C1730 Code - Reference Voltage Out of Range

Quick Answer

The 5 volt reference voltage is supplied by the Anti-Lock Brake System (ABS) module to the primary brake pressure transducer and the brake pedal travel sensor. Common causes include Faulty Anti-Lock Brake System (ABS), Anti-Lock Brake System (ABS) harness is open or shorted, Anti-Lock Brake System (ABS) 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: C1730 indicates Reference Voltage Out of Range.
Common causes: Common causes include Faulty Anti-Lock Brake System (ABS), Anti-Lock Brake System (ABS) harness is open or shorted, Anti-Lock Brake System (ABS) 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 7,703

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 Nov 19, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1730 Description

The 5 volt reference voltage is supplied by the Anti-Lock Brake System (ABS) module to the primary brake pressure transducer and the brake pedal travel sensor. Reference voltage is supplied to the primary brake pressure transducer, and to the brake pedal travel sensor. The reference voltage circuits return to the ABS module for the primary brake pressure transducer, and for the brake pedal travel sensor.

OBDII Code C1730 - Reference Voltage Out of Range - AutoCodes.com — C1730 Code - Reference Voltage Out of Range

What does this mean?

What are the Possible Causes of the DTC C1730?

Faulty Anti-Lock Brake System (ABS)
Anti-Lock Brake System (ABS) harness is open or shorted
Anti-Lock Brake System (ABS) circuit poor electrical connection
Faulty Master cylinder
Faulty Primary brake pressure transducer
Faulty Brake pedal travel sensor

How to Fix the DTC C1730?

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 C1730 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 C1730 code?

Need more information on how to fix the C1730 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1730 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C1730 Ford — Reference Voltage Out of Range
C1730 Lincoln — Reference Voltage Out of Range
C1730 Mercury — Reference Voltage Out of Range

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 C1730 Code

1. What are the common symptoms of OBDII code C1730 (Reference Voltage Out of Range)?

- Common symptoms include dashboard warning lights, engine stalling, rough idling, and issues with the vehicle's electrical systems.

2. What can cause the OBDII code C1730 to trigger?

- The code C1730 can be triggered by a faulty power supply, a damaged wiring harness, issues with the electronic control module (ECM), or a malfunctioning sensor.

3. How can I diagnose the cause of OBDII code C1730?

- Diagnosing code C1730 typically involves using a diagnostic scan tool to retrieve the code, checking the vehicle's wiring for damage, testing the power supply to the sensor, and inspecting the sensor itself for any signs of malfunction.

4. Is it safe to drive with OBDII code C1730 active?

- It is not recommended to drive with code C1730 active as it can lead to further damage to the vehicle's systems and potentially unsafe driving conditions.

5. Can I repair OBDII code C1730 on my own?

- Depending on your level of automotive expertise, you may be able to repair code C1730 on your own by addressing the underlying issue such as replacing a faulty sensor or repairing damaged wiring.

6. What are some tips for repairing OBDII code C1730?

- Some repair tips for code C1730 include checking and repairing any damaged wiring, ensuring a stable power supply to the sensor, replacing a faulty sensor, and clearing the code with a diagnostic scan tool after the repair.

7. How much does it typically cost to repair OBDII code C1730?

- The cost of repairing code C1730 can vary depending on the underlying issue, labor rates in your area, and whether you choose to repair the problem yourself or take it to a professional mechanic.

8. Can a low battery voltage trigger OBDII code C1730?

- Yes, a low battery voltage can potentially trigger code C1730 as it can affect the reference voltage needed for proper sensor operation.

9. Will disconnecting the battery reset OBDII code C1730?

- Disconnecting the battery may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear after a certain number of drive cycles.

10. How important is it to address OBDII code C1730 promptly?

- It is important to address code C1730 promptly to prevent further damage to the vehicle's systems, ensure safe driving conditions, and avoid potential breakdowns on the road.