What Does P2745 Mean?
The transmission control module has detected a fault in the intermediate shaft speed sensor B circuit. This sensor monitors the rotational speed of an intermediate shaft within the transmission to enable proper shift timing and clutch control.
Common Causes
35%
Intermediate shaft speed sensor B failure or internal short/open circuit
25%
Damaged wiring harness or connector pins at sensor B
20%
Metal contamination on sensor tip affecting magnetic pickup
15%
Damaged or missing reluctor ring/tone wheel on intermediate shaft
5%
Transmission control module (TCM) circuit failure
Diagnostic Steps
1
Step 1: Inspect sensor connector for damage, corrosion, or oil contamination that could affect signal
2
Step 2: Measure sensor resistance and compare to specifications (typically 200-1000 ohms for passive sensors)
3
Step 3: Check sensor air gap between sensor tip and reluctor ring if accessible without disassembly
4
Step 4: Remove sensor and inspect tip for metal debris, damage, or excessive wear; clean and reinstall
5
Step 5: Monitor sensor signal with oscilloscope during operation if possible, or verify signal wire continuity to TCM
Estimated Repair Cost
$200 - $600
Parts + labor, varies by vehicle and location
The transmission control module has detected a fault in the intermediate shaft speed sensor B circuit. This sensor monitors the rotational speed of an intermediate shaft within the transmission to enable proper shift timing and clutch control.
The most common cause of P2745 (Intermediate Shaft Speed Sensor B Circuit) is: Intermediate shaft speed sensor B failure or internal short/open circuit
Typical repair costs for P2745 range from $200 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Transmission may experience harsh or delayed shifts, incorrect gear selection, or enter limp mode limiting vehicle to one or two gears. Drive cautiously and avoid aggressive acceleration.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2745 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Powertrain
System
Transmission Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
