The P2745: Intermediate Shaft Speed Sensor B Circuit refers to an issue with the intermediate shaft speed sensor ‘B’, which is responsible for monitoring the rotational speed of the transmission’s intermediate shaft. This code may be triggered by a faulty sensor, issues with the wiring or connectors, or a malfunction in the control module. Accurate readings from this sensor are essential for effective transmission operation and proper gear shifting.
P2745 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P2745: Intermediate Shaft Speed Sensor B Circuit |
| Is it serious? | Yes, this code can lead to improper transmission operation, affecting shifting quality and potentially leading to more severe transmission issues. |
| Possible causes | – Faulty intermediate shaft speed sensor B – Wiring or connector issues – Control module problems |
| How to diagnose? | – Inspect and test intermediate shaft speed sensor B – Check wiring and connectors – Verify control module functionality – Replace faulty sensor or components as needed |
P2745 Meaning
The P2745: Intermediate Shaft Speed Sensor B Circuit code indicates a problem with the circuit related to intermediate shaft speed sensor ‘B’. This sensor helps the transmission control module determine the speed of the transmission’s intermediate shaft, which is crucial for proper gear shifting. A faulty sensor, poor connections, or control module issues can lead to incorrect readings, affecting the transmission’s ability to manage shifts effectively.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to look for additional codes related to the transmission or speed sensors. These may provide more insight into related issues that could be affecting sensor ‘B’. | OBD-II Scanner |
| Inspect Intermediate Shaft Speed Sensor B | Visually inspect the sensor for any signs of physical damage or wear. Ensure that the sensor is securely mounted in its correct location without any obstructions. | Flashlight, Safety Gloves |
| Test Intermediate Shaft Speed Sensor B | Use a multimeter to check the resistance and output of the sensor. Compare these readings to the manufacturer’s specifications to determine if the sensor is functioning correctly. | Multimeter, Manufacturer Specifications |
| Check Wiring and Connectors | Inspect the wiring and connectors leading to the intermediate shaft speed sensor ‘B’. Look for loose connections, corrosion, or damaged wires that could interrupt the circuit. | Flashlight, Multimeter |
| Verify Control Module Functionality | Use a diagnostic tool to confirm that the control module is receiving signals from the sensor. A faulty control module could prevent proper communication, leading to this code. | Diagnostic Tool, Manufacturer Software |
| Replace Faulty Sensor or Components as Needed | Replace any faulty components such as the speed sensor, connectors, or wiring. If a problem with the control module is identified, consider repairing or replacing it. | Replacement Sensor, Wiring Repair Kit |
| Clear the Code and Test Drive | After repairs, use an OBD-II scanner to clear the P2745 code. Conduct a test drive to ensure that the sensor is providing accurate data and that the transmission is shifting smoothly. | OBD-II Scanner |
| Recheck for Codes | Perform a final scan after the test drive to verify that the P2745 code has not returned. If the code reappears, further diagnostics may be necessary. | OBD-II Scanner |
Free PDF: How to choose OBD2 scanner
I’ve made you a free PDF to choose the OBD2 scanner in 5 minutes.
✅ Which OBD2 scanner is best?
✅ Which type should you get (DIY, Pro, Hobby)
✅ What is the best scanner for the exact brand/feature (e.g best for BMW)
✅ How to get a Bi-Directional tool for as cheap as $40
✅ Discount coupons for scanners
PDF is 100% free and it is designed to help you pick a scanner in less than a few minutes! Not a boring 50-page guide.
Just tell me where to send it.
Hi, I am Juraj “Yuri” Lukacko. I got frustrated by unhelpful and scammy mechanics, so I decided to learn everything about car diagnostics myself. I test dozens of new car diagnostic tools every month along with learning new strategies to fix and customize cars. About Juraj Lukacko (Yuri)