B0718 - Transmission Fluid Temperature Sensor Range/Performance Problem in Common Vehicles

Quick Answer

B0718 means: B0718 indicates a problem with the transmission fluid temperature sensor.

Fix: Check and replace faulty components Cost: $100 - $200 Time: 90-180 minutes

Can I drive with B0718? It is crucial to address this issue immediately to prevent serious transmission damage.

Common Questions

What does B0718 mean and how does it affect my car?

The B0718 code points to a problem with the transmission fluid temperature sensor. This sensor is crucial for ensuring your transmission operates efficiently. If it fails, you may notice issues like harsh shifting or decreased fuel efficiency. Over time, neglecting this code can lead to serious transmission damage, making it important to address promptly.

What are the most common causes of B0718 and how much does it cost to fix?

Common causes of B0718 include a faulty transmission fluid temperature sensor (70% likelihood) and wiring issues. Repairs typically cost between $100 and $200, primarily for sensor replacement. Regular maintenance can help prevent these issues.

Can I drive my car with B0718 or should I stop immediately?

While you may be able to drive short distances, it's advisable to avoid extended use until the issue is resolved. Ignoring the code can lead to severe transmission problems, so it's best to have it diagnosed and repaired as soon as possible.

How can I diagnose B0718 myself using GeekOBD APP?

To diagnose B0718 using the GeekOBD APP, connect the device to your vehicle's OBD2 port, run a scan to retrieve the code, and analyze any associated freeze frame data. This will help you understand the conditions under which the code was triggered and guide your next steps.

What vehicles are most commonly affected by B0718?

The B0718 code is often reported in vehicles like the Chevrolet Silverado (2014-2019), Ford F-150 (2015-2020), and various models from Dodge and Jeep. If you own one of these vehicles, be vigilant about transmission performance.

How can I prevent B0718 from happening again?

To prevent the B0718 code from recurring, ensure regular transmission fluid changes and keep an eye on your vehicle’s fluid levels. Avoid towing beyond your vehicle's capacity and monitor for any unusual transmission behavior.

What is B0718?

The DTC code B0718 indicates a malfunction related to the transmission fluid temperature sensor, which is responsible for monitoring the temperature of the transmission fluid in various vehicles, including popular models such as the Chevrolet Silverado (2014-2019) and Ford F-150 (2015-2020). This code suggests that the sensor is either reading temperatures outside its expected range or is not performing correctly. When the transmission fluid overheats, it can lead to severe transmission damage, poor shifting performance, and even complete transmission failure if not addressed promptly. The transmission fluid temperature is crucial for optimal transmission operation, as it affects not only shifting quality but also fuel efficiency. If the sensor fails or provides inaccurate readings, the vehicle’s transmission control module (TCM) may not adjust the shift points appropriately, leading to sluggish performance or hard shifts. Ignoring this code could result in costly repairs down the line, so understanding its implications and addressing it quickly is essential for vehicle longevity.

System: B - Body (Airbags, Lighting, Security, Climate Control)

Symptoms

Common symptoms when B0718 is present:

  • The check engine light is illuminated and remains on, indicating an ongoing issue with the transmission system.
  • Drivers may experience harsh or erratic shifting, making it difficult to accelerate smoothly or maintain speed.
  • Fuel economy may drop significantly, potentially by 10-15%, due to inefficient operation of the transmission.
  • Unusual noises, such as grinding or whining from the transmission, could also occur, signaling further internal issues.
  • In extreme cases, the vehicle may go into limp mode, restricting speed and performance to protect the transmission from further damage.

Possible Causes

Most common causes of B0718 (ordered by frequency):

  1. {'cause': 'Faulty transmission fluid temperature sensor', 'likelihood': '70%', 'details': 'The most common cause of the B0718 code is a malfunctioning sensor that fails to accurately read the temperature of the transmission fluid.'}
  2. {'cause': 'Wiring issues or poor connections', 'details': 'Damaged wiring or loose connections can prevent proper communication between the sensor and the TCM, leading to erroneous readings.'}
  3. {'cause': 'Contaminated transmission fluid', 'preventionTips': 'Regular maintenance and fluid changes can help prevent contamination, ensuring the sensor operates correctly.'}
  4. {'cause': 'Faulty TCM', 'details': 'In rare cases, the transmission control module itself may malfunction, leading to incorrect readings and transmission issues.'}
  5. {'cause': 'Overheated transmission due to external factors', 'details': 'Driving in extreme conditions or towing heavy loads without proper cooling can lead to overheating, affecting sensor readings.'}

B0718 Repair Costs

Cost Breakdown by Repair Type

Transmission Fluid Temperature Sensor Replacement

Replacing the faulty transmission fluid temperature sensor is the most effective solution.

  • Total: $100 - $200
  • Success rate: 90%
Money-Saving Tips for B0718
  • Start with the most common and least expensive repairs first
  • Use GeekOBD APP to confirm diagnosis before replacing expensive parts
  • Consider preventive maintenance to avoid future occurrences
  • Compare prices for OEM vs aftermarket parts based on your needs
  • Address the issue promptly to prevent more expensive secondary damage

Diagnostic Steps

Professional B0718 Diagnosis Process

Follow these systematic steps to accurately diagnose B0718. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Initial visual inspection - Check for obvious signs such as damaged wiring, loose connections, or corrosion (5-10 minutes)

Step 1: Initial visual inspection - Check for obvious signs such as damaged wiring, loose connections, or corrosion (5-10 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 2: Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes)

Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 3: Step 3: Component testing - Use a multimeter to test the transmission fluid temperature sensor and wiring integrity (20-30 minutes)

Step 3: Component testing - Use a multimeter to test the transmission fluid temperature sensor and wiring integrity (20-30 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 4: Step 4: System function test - After repairs, verify proper operation of the sensor and clear codes using the GeekOBD APP (10-15 minutes)

Step 4: System function test - After repairs, verify proper operation of the sensor and clear codes using the GeekOBD APP (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and monitor for any reoccurrence of the code (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and monitor for any reoccurrence of the code (15-20 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.

Important Notes

  • Always verify the repair with GeekOBD APP after completing diagnostic steps
  • Clear codes and test drive to ensure the problem is resolved
  • Address underlying causes to prevent code recurrence

Real Repair Case Studies

Case Study 1: Chevrolet Silverado B0718 Diagnosis and Repair

Vehicle: 2018 Chevrolet Silverado 1500, 45,000 miles

Problem: Customer reported check engine light and rough shifting.

Diagnosis: Scanned for codes using GeekOBD APP and confirmed B0718. Inspected wiring and found corroded connections.

Solution: Replaced the transmission fluid temperature sensor and repaired wiring.

Cost: $150 (sensor $100, labor $50)

Result: After repair, the check engine light was cleared, and the shifting improved significantly.

Case Study 2: Ford F-150 B0718 Troubleshooting

Vehicle: 2019 Ford F-150, 30,000 miles

Problem: Driver experienced a sudden drop in fuel economy and erratic shifting.

Diagnosis: Used GeekOBD APP to retrieve DTCs and found B0718. Conducted tests on the temperature sensor.

Solution: Replaced the faulty sensor and updated the TCM software.

Cost: $250 (sensor $150, software $100)

Result: Post-repair, the truck's fuel efficiency returned to normal, and shifting was smooth.

Diagnose B0718

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis
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Code Information

Code: B0718
System: Body (Airbags, Lighting, Security, Climate Control)
Severity: HIGH
Category: Body Codes