P2750: Intermediate Shaft Speed Sensor C Circuit Range/Performance
The P2750 code indicates that the transmission control module (TCM) has detected a signal from the intermediate shaft speed sensor C that is out of the expected range or performance parameters. This sensor monitors the rotational speed of the intermediate shaft inside the transmission, which is critical for proper shift timing and pressure control. A range/performance issue suggests the signal is erratic, intermittent, or not within the normal operating range, often due to sensor damage, wiring problems, or mechanical issues within the transmission.
01. Most Common Causes
- Faulty intermediate shaft speed sensor C
- Damaged or corroded wiring/connectors to the sensor
- Contaminated transmission fluid causing erratic sensor readings
- Internal transmission mechanical failure (e.g., worn bearings or gears)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Harsh or erratic shifting
- Transmission slipping or delayed engagement
- Reduced fuel economy
03. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm the code and check for additional transmission-related codes.
Step 2: Visually inspect the sensor and wiring for damage, corrosion, or loose connections.
Step 3: Test the sensor's resistance and voltage output using a multimeter and compare to manufacturer specifications.
Step 4: Check transmission fluid level and condition; contaminated fluid may require a flush.
Step 5: If sensor and wiring are okay, perform a transmission mechanical inspection to rule out internal damage.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances with this code, as it can cause transmission damage or unsafe driving conditions due to erratic shifting.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for sensor replacement, but can be higher if wiring repairs or transmission work is needed.