What Does P2747 Mean?
The transmission control module is not receiving any signal from intermediate shaft speed sensor B. This indicates a complete loss of communication from the sensor, suggesting an open circuit, failed sensor, or complete disconnection.
Common Causes
35%
Disconnected or completely damaged sensor connector
30%
Failed intermediate shaft speed sensor B with open internal circuit
25%
Broken or severed wiring between sensor and transmission control module
10%
Transmission control module (TCM) internal circuit failure
Diagnostic Steps
1
Step 1: Verify sensor connector is fully seated and locked; inspect for visible damage or disconnection
2
Step 2: With ignition on, measure voltage at sensor connector to confirm power and ground are present (if active sensor)
3
Step 3: Measure sensor resistance across terminals with sensor disconnected; should read within specification
4
Step 4: Check continuity of all wires from sensor connector to TCM connector; repair any open circuits
5
Step 5: If all circuits are intact, replace sensor and verify TCM receives signal; if no signal persists, diagnose TCM
Estimated Repair Cost
$200 - $600
Parts + labor, varies by vehicle and location
The transmission control module is not receiving any signal from intermediate shaft speed sensor B. This indicates a complete loss of communication from the sensor, suggesting an open circuit, failed sensor, or complete disconnection.
The most common cause of P2747 (Intermediate Shaft Speed Sensor B Circuit No Signal) is: Disconnected or completely damaged sensor connector
Typical repair costs for P2747 range from $200 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Transmission will likely enter fail-safe/limp mode with severely limited functionality, possibly stuck in one gear. Vehicle may not be drivable beyond getting to repair facility at reduced speeds.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2747 to identify the root cause.
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Quick Info
Category
Powertrain
System
Transmission Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
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