P1734 Hyundai Code - Speed Sensor Reference Low
Quick Answer
P1734 Hyundai indicates Speed Sensor Reference Low. 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
- P1734 Hyundai indicates Speed Sensor Reference Low.
- 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 P1734 Hyundai Description
What are the Possible Causes of the DTC P1734 Hyundai?
- Faulty Speed Sensor
- Speed Sensor harness is open or shorted
- Speed Sensor circuit poor electrical connection
How to Fix the DTC P1734 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 P1734 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 P1734 Hyundai Code
1. What does the OBD-II code P1734 mean for a Hyundai?
P1734 indicates a "Speed Sensor Reference Low," which means the transmission control module (TCM) is detecting an issue with the speed sensor signal.
2. What are the common symptoms of code P1734 in a Hyundai?
Symptoms may include erratic shifting, transmission slipping, reduced acceleration, and the check engine light being illuminated.
3. What causes code P1734 in a Hyundai?
Common causes include a faulty speed sensor, damaged wiring or connectors, low transmission fluid, or issues with the transmission control module.
4. Can low transmission fluid trigger code P1734 in a Hyundai?
Yes, insufficient transmission fluid can cause improper sensor readings, potentially leading to this code.
5. How do you diagnose code P1734 in a Hyundai?
Diagnosis involves checking the speed sensor, inspecting wiring and connectors for damage, verifying transmission fluid level, and scanning for related codes.
6. Is it safe to drive a Hyundai with code P1734?
Driving with this code can lead to transmission damage or unsafe driving conditions due to erratic shifting, so it’s best to address it promptly.
7. How is code P1734 fixed in a Hyundai?
Repairs may involve replacing the speed sensor, repairing damaged wiring, topping off or replacing transmission fluid, or addressing issues with the TCM.
8. How much does it cost to fix code P1734 in a Hyundai?
Repair costs vary, but speed sensor replacement typically ranges from $100 to $300, depending on labor and parts.
9. Can a faulty TCM cause code P1734 in a Hyundai?
Yes, a malfunctioning transmission control module can produce incorrect speed sensor readings, triggering this code.
10. How can code P1734 in a Hyundai be prevented?
Regular maintenance, including checking transmission fluid levels and inspecting wiring for wear, can help prevent this issue.
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