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P1740 Hyundai Code - Position1 Short To Ground

Quick Answer

The P1740 diagnostic trouble code for Hyundai vehicles refers to a "Position1 Short To Ground" issue. Common causes include Faulty transmission position sensor, Damaged wiring or connectors in the TCM circuit, Corrosion or poor connections in the transmission position sensor circuit. 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
P1740 Hyundai indicates Position1 Short To Ground.
Common causes
Common causes include Faulty transmission position sensor, Damaged wiring or connectors in the TCM circuit, Corrosion or poor connections in the transmission position sensor circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P1740 Hyundai Description

The P1740 diagnostic trouble code for Hyundai vehicles refers to a "Position1 Short To Ground" issue. This means that there is a problem with the transmission control module (TCM) circuit that is responsible for monitoring the position of the transmission components. Specifically, the code indicates that there is a short circuit to ground in the circuit related to the transmission position sensor or its wiring.

OBDII Code P1740 Hyundai - Position1 Short To Ground
P1740 Hyundai Code - Position1 Short To Ground

Common Causes of P1740 Hyundai

  1. Faulty transmission position sensor
  2. Damaged wiring or connectors in the TCM circuit
  3. Corrosion or poor connections in the transmission position sensor circuit
  4. Short circuit to ground in the TCM circuit
  5. Issues with the TCM itself

Symptoms of P1740 Hyundai

  1. Erratic shifting behavior
  2. Harsh gear changes
  3. Transmission slippage
  4. Transmission failure to engage
  5. Incorrect gear selection

How to Fix P1740 Hyundai

  1. Begin by performing a thorough inspection of the transmission position sensor and its wiring. Check for any visible damage, corrosion, or loose connections.
  2. Use a multimeter to test the continuity of the wiring in the TCM circuit to identify any short circuits to ground.
  3. If the transmission position sensor is faulty, replace it with a new sensor following the manufacturer's instructions.
  4. Repair any damaged wiring or connectors in the TCM circuit and ensure proper connections.
  5. Clear the diagnostic trouble codes from the vehicle's computer using a scan tool and test drive the vehicle to verify that the issue has been resolved.

Cost to Fix P1740 Hyundai

The typical repair costs for addressing a P1740 code in a Hyundai vehicle can vary depending on the specific cause of the issue and the extent of the repairs needed. On average, the cost for parts and labor to resolve this code could range from $200 to $500. It's important to note that diagnostic time and labor rates can vary between auto repair shops, with hourly rates typically falling between $80 and $150. Factors such as the vehicle's make and model, the location of the repair shop, and the complexity of the repair can all impact the final cost. It's recommended to obtain quotes from multiple shops to get a more accurate estimate for the repair.

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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 P1740 Hyundai Code

1. What are the common symptoms of OBDII code P1740 (Hyundai) Position1 Short To Ground?

Common symptoms include issues with the transmission shifting smoothly, hesitation during acceleration, and illumination of the Check Engine Light.

2. What are the possible causes of OBDII code P1740 (Hyundai) Position1 Short To Ground?

Potential causes may include a faulty transmission range sensor, damaged wiring or connectors, or a short to ground in the transmission circuit.

3. How can I diagnose OBDII code P1740 (Hyundai) Position1 Short To Ground?

To diagnose this code, a professional scanner can be used to read the code and pinpoint the exact cause, while a visual inspection of the wiring and connectors can help identify any visible issues.

4. Is it safe to continue driving with OBDII code P1740 (Hyundai) Position1 Short To Ground?

It is not recommended to continue driving with this code present, as it can lead to further damage to the transmission and potentially cause unsafe driving conditions.

5. What are some repair tips for fixing OBDII code P1740 (Hyundai) Position1 Short To Ground?

Repair tips may include checking and repairing any damaged wiring or connectors, replacing the transmission range sensor if faulty, and clearing the code after the repair is completed.

6. Can OBDII code P1740 (Hyundai) Position1 Short To Ground be fixed without professional help?

While some basic troubleshooting like checking the wiring and connectors can be done by DIY enthusiasts, fixing this code often requires professional diagnosis and repair due to the complexity of transmission systems.

7. Does OBDII code P1740 (Hyundai) Position1 Short To Ground affect fuel efficiency?

Yes, this code can potentially impact fuel efficiency as it may cause the transmission to operate inefficiently, leading to increased fuel consumption.

8. Can weather conditions affect the occurrence of OBDII code P1740 (Hyundai) Position1 Short To Ground?

Extreme weather conditions such as excessive heat or moisture can sometimes exacerbate electrical issues leading to this code, so it's important to keep the vehicle well maintained.

9. Will resetting the OBDII code P1740 (Hyundai) Position1 Short To Ground make it go away permanently?

Simply resetting the code without addressing the underlying issue will not make it go away permanently, as the problem will likely resurface until properly diagnosed and repaired.

10. Is there a recall or service bulletin related to OBDII code P1740 (Hyundai) Position1 Short To Ground?

It's recommended to check with your Hyundai dealership or the National Highway Traffic Safety Administration (NHTSA) website for any relevant recalls or service bulletins related to this specific OBDII code.

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