Transmission Fluid Temperature Sensor Circuit Intermittent
The P2744 code indicates that the Powertrain Control Module (PCM) has detected an intermittent signal from the Transmission Fluid Temperature (TFT) sensor circuit. This sensor monitors the temperature of the transmission fluid to adjust shift patterns and torque converter lockup. An intermittent circuit can be caused by a faulty sensor, damaged wiring, or poor electrical connections, leading to erratic temperature readings and potential transmission performance issues.
01. Most Common Causes
- Faulty transmission fluid temperature sensor
- Damaged or corroded wiring/connectors in the TFT sensor circuit
- Intermittent short or open in the sensor circuit
- Poor electrical connection at the sensor or PCM
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Harsh or delayed shifting
- Transmission slipping or overheating
- Reduced fuel economy
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data to capture conditions when the code set.
Step 2: Visually inspect the TFT sensor and its wiring harness for damage, corrosion, or loose connections.
Step 3: Use a multimeter to test the TFT sensor resistance at various temperatures and compare to manufacturer specifications.
Step 4: Check for intermittent shorts or opens by wiggling the wiring harness while monitoring the sensor signal with a scan tool.
Step 5: If the sensor and wiring are okay, test the circuit at the PCM connector for continuity and proper voltage.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as the transmission may shift erratically or overheat, potentially causing internal damage.
How much does it cost to fix?▼
Repair costs typically range from $50 to $150 for parts and labor, depending on whether the sensor or wiring needs replacement.