Transmission Fluid Temperature Sensor Stuck Low
The P1713 code indicates that the transmission control module (TCM) has detected the transmission fluid temperature (TFT) sensor reading is stuck below 50°F (10°C) for an extended period. This can cause the transmission to operate in a cold-start strategy, leading to harsh shifts, delayed engagement, or limp mode. The sensor may be faulty, have a short to ground, or there could be a wiring issue. In some cases, the TCM itself may be at fault.
01. Most Common Causes
- Faulty transmission fluid temperature sensor
- Short to ground in TFT sensor circuit
- Open or high resistance in TFT sensor wiring
- Corroded or damaged connector
- Faulty transmission control module (TCM)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Harsh or delayed shifts
- Transmission stuck in cold-start mode
- Poor fuel economy
- Transmission enters limp mode
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Inspect TFT sensor connector and wiring for damage or corrosion.
Step 3: Measure TFT sensor resistance and compare to specifications (typically 100k ohms at -40°F to 1k ohms at 200°F).
Step 4: Check for shorts to ground or power in the sensor circuit.
Step 5: If sensor and wiring are okay, test TCM for proper signal processing.
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 harshly or enter limp mode, potentially causing further damage. Short trips to a repair shop are acceptable.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for diagnosis and sensor replacement. If the TCM is faulty, costs can be higher.