What Does P2767 Mean?
The TCM is receiving no signal from the input/turbine speed sensor B circuit. This indicates a complete loss of communication from the sensor, typically due to open circuit, power supply failure, or sensor failure.
Common Causes
40%
Completely failed input/turbine speed sensor B
30%
Open circuit in sensor wiring harness
20%
Loss of power or ground to sensor circuit
10%
Failed TCM unable to receive sensor signal
Diagnostic Steps
1
Step 1: Verify power and ground supply at speed sensor connector (check for reference voltage and good ground)
2
Step 2: Test sensor output signal wire for continuity between sensor and TCM connector
3
Step 3: Check for open circuits by measuring resistance across sensor terminals (should show specified resistance, not infinite)
4
Step 4: Substitute known-good sensor to verify sensor failure vs wiring issue
5
Step 5: Inspect internal transmission harness connector at valve body if external testing shows no faults
Estimated Repair Cost
$150 - $800
Parts + labor, varies by vehicle and location
The TCM is receiving no signal from the input/turbine speed sensor B circuit. This indicates a complete loss of communication from the sensor, typically due to open circuit, power supply failure, or sensor failure.
The most common cause of P2767 (Input/Turbine Speed Sensor "B" Circuit No Signal) is: Completely failed input/turbine speed sensor B
Typical repair costs for P2767 range from $150 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Transmission will likely enter limp mode with fixed gear operation (usually 2nd or 3rd gear only). Safe to drive at reduced speeds to reach repair facility but normal operation is severely limited.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2767 to identify the root cause.
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Quick Info
Category
Powertrain
System
Automatic Transmission
Difficulty
Type
Generic (SAE)
Recommended Tools
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