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 schedules and torque converter lockup. An out-of-range reading can be caused by a faulty sensor, wiring issues, or a malfunctioning PCM. This condition may lead to improper transmission operation, reduced fuel economy, and potential transmission damage if ignored.
1. Symptoms You Will Notice
- Check Engine Light illuminated
- Harsh or erratic shifting
- Transmission stuck in limp mode or failsafe mode
- Poor fuel economy
- Transmission overheating
2. Most Common Causes
- Faulty or misadjusted transmission range (TR) sensor
- Open, shorted, or high-resistance wiring in the TR sensor circuit
- Damaged or improperly adjusted neutral safety switch (NSS)
- Mechanical issues in the transmission shift linkage or selector mechanism
- Corroded or loose electrical connections at the TR sensor harness
- Internal PCM failure (less common)
3. Step-by-Step Diagnosis
Step 1: Scan for additional codes and record freeze frame data.
Step 2: Inspect transmission fluid level and condition; top off or replace if necessary.
Step 3: Visually check the TFT sensor connector and wiring for damage, corrosion, or loose connections.
Step 4: Test the TFT sensor resistance with a multimeter and compare to manufacturer specifications.
Step 5: If sensor and wiring are okay, check for PCM issues or perform a relearn procedure.
4. 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 shifting problems and potential overheating. Short trips to a repair shop are acceptable, but avoid heavy loads or towing.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for diagnosis and replacement of the TFT sensor, including parts and labor. Additional costs may apply if wiring repairs or transmission service are needed.
5. Commonly Affected Makes
This is a manufacturer-specific code. The exact manufacturer is not confirmed in our current database.