<ul> <li><b>Engine Light ON (or Service Engine Soon Warning Light)</b>: The illumination of the engine light indicates a detected issue with the Intermediate Shaft Speed Sensor 'C' Circuit. This could be due to a range of potential causes including a faulty sensor, wiring issues, or a malfunctioning transmission control module.</li> <li><b>Transmission Shifting Problems</b>: Erratic or harsh shifting can occur due to incorrect speed readings from the Intermediate Shaft Speed Sensor 'C'. This can be caused by sensor failure, poor electrical connections, or issues within the transmission itself.</li> <li><b>Reduced Fuel Efficiency</b>: Inaccurate speed data can lead to improper transmission operation, which may result in reduced fuel efficiency. This symptom is often linked to sensor malfunction or wiring problems.</li> <li><b>Vehicle Stalling or Hesitation</b>: The vehicle may experience stalling or hesitation during acceleration if the Intermediate Shaft Speed Sensor 'C' is not providing accurate data. This can be due to sensor issues, damaged wiring, or a faulty transmission control module.</li> </ul>

<ul><li>The Intermediate Shaft Speed Sensor 'C' may be faulty, leading to incorrect speed readings.</li><li>An open or shorted harness in the Intermediate Shaft Speed Sensor 'C' can disrupt the signal transmission.</li><li>Poor electrical connections in the Intermediate Shaft Speed Sensor 'C' circuit can cause intermittent or incorrect sensor performance.</li></ul>

<ul> <li><b>Initial Inspection</b>: Visually inspect the wiring and connectors related to the Intermediate Shaft Speed Sensor 'C'. Look for signs of damage, corrosion, or disconnection.</li> <li><b>Check for Other DTCs</b>: Use an OBD-II scanner to check for any additional DTCs. Address any other codes first as they may be related to the P2750 code.</li> <li><b>Test Sensor Voltage</b>: Using a multimeter, measure the voltage at the sensor connector. Compare the readings to the manufacturer's specifications to ensure they are within range.</li> <li><b>Inspect Sensor Signal</b>: Connect an oscilloscope to the sensor signal wire and observe the waveform. Ensure the signal is consistent and within the expected range.</li> <li><b>Check Transmission Fluid</b>: Inspect the transmission fluid level and condition. Low or contaminated fluid can affect sensor performance.</li> <li><b>Test Sensor Resistance</b>: Measure the resistance of the Intermediate Shaft Speed Sensor 'C' using an ohmmeter. Compare the readings to the manufacturer's specifications.</li> <li><b>Inspect Transmission Control Module (TCM)</b>: Check the TCM for any signs of damage or malfunction. Ensure it is receiving and sending signals correctly.</li> <li><b>Replace Sensor if Necessary</b>: If all tests indicate a faulty sensor, replace the Intermediate Shaft Speed Sensor 'C' and clear the DTC code. Re-test to confirm the issue is resolved.</li></ul>

<p>The DTC code P2750 indicates an issue with the Intermediate Shaft Speed Sensor 'C' Circuit Range/Performance. This is a moderate issue that can affect the transmission's ability to shift properly.</p><ul><li><b>Immediate Actions:</b> Inspect the sensor and its wiring for damage or disconnection.</li><li><b>Potential Risks:</b> Delayed repair can lead to transmission slippage, erratic shifting, and potential long-term damage to the transmission system.</li></ul>