P1711: TFT Sensor Out of Self-Test Range
The P1711 code indicates that the Transmission Fluid Temperature (TFT) sensor has reported a voltage or resistance value outside the expected range during the self-test. This sensor monitors the temperature of the transmission fluid to help the powertrain control module (PCM) adjust shift patterns and torque converter lockup. An out-of-range reading can be caused by a faulty sensor, wiring issues, or a malfunctioning PCM. This code is often accompanied by other transmission-related codes and may affect drivability.
01. Most Common Causes
- Faulty TFT sensor
- Open or shorted wiring to the TFT sensor
- Poor electrical connection at the sensor or PCM
- Faulty PCM (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Harsh or erratic shifting
- Transmission stuck in limp mode or failsafe
- Poor fuel economy
03. Step-by-Step Diagnosis
Step 1: Scan for additional codes and record freeze frame data.
Step 2: Visually inspect the TFT sensor connector and wiring for damage or corrosion.
Step 3: Test the TFT sensor resistance at various temperatures and compare to specifications.
Step 4: Check for continuity and shorts in the wiring between the sensor and PCM.
Step 5: If all else is normal, replace the TFT sensor and clear codes.
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 due to improper shifting or overheating. Limp mode may limit speed and drivability.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for parts and labor, depending on the vehicle and shop rates. The sensor itself is usually inexpensive.