What Does P2751 Mean?
The transmission control module is receiving no signal from intermediate shaft speed sensor C. This indicates a complete loss of communication from the sensor, preventing proper transmission operation and shift control.
Common Causes
40%
Complete sensor C failure (open circuit internally)
25%
Broken or severed wiring to sensor C
20%
Disconnected or severely corroded connector at sensor C
10%
Loss of power or ground to sensor circuit
5%
TCM internal circuit failure
Diagnostic Steps
1
Step 1: Verify sensor C connector is fully connected and inspect for terminal damage
2
Step 2: Test for voltage supply and ground at sensor connector using multimeter
3
Step 3: Check continuity of all wires between sensor and TCM connector
4
Step 4: Measure sensor resistance; infinite resistance indicates open sensor
5
Step 5: If circuits test good, replace sensor C and verify signal returns
Estimated Repair Cost
$180 - $700
Parts + labor, varies by vehicle and location
The transmission control module is receiving no signal from intermediate shaft speed sensor C. This indicates a complete loss of communication from the sensor, preventing proper transmission operation and shift control.
The most common cause of P2751 (Intermediate Shaft Speed Sensor C Circuit No Signal) is: Complete sensor C failure (open circuit internally)
Typical repair costs for P2751 range from $180 to $700, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Transmission will likely operate in limp mode with fixed gear or limited gear availability. Safe for emergency operation but seek immediate repair.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2751 to identify the root cause.
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Quick Info
Category
Powertrain
System
Automatic Transmission
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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