Transmission Fluid Temperature Sensor A Circuit Range/Performance
The P0711 code indicates that the transmission control module (TCM) has detected a problem with the transmission fluid temperature (TFT) sensor circuit. This sensor monitors the temperature of the transmission fluid and sends a signal to the TCM. The code is set when the sensor reading is outside the expected range or the sensor response is slower than expected. This can cause the transmission to shift improperly or go into limp mode.
1. Symptoms You Will Notice
- Check Engine Light illuminated
- Transmission shifting harshly or erratically
- Transmission slipping or overheating
- Vehicle may enter limp mode
2. Most Common Causes
- Faulty transmission fluid temperature sensor
- Wiring or connector issues in the sensor circuit
- Low or contaminated transmission fluid
- Internal transmission problems
3. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Inspect transmission fluid level and condition; top off or replace if necessary.
Step 3: Visually inspect the TFT sensor wiring and connector 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 internal transmission issues or a faulty TCM.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as it can cause transmission damage. If the transmission is shifting poorly or overheating, have it towed to a shop.
How much does it cost to fix?▼
The cost to diagnose and replace a TFT sensor typically ranges from $50 to $150 for parts and labor, but can be higher if wiring repairs or transmission work is needed.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.