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 reduced fuel economy. The sensor may be faulty, have a wiring issue, or the fluid level could be low.
1. Symptoms You Will Notice
- Harsh or delayed shifting
- Transmission stuck in cold mode
- Poor fuel economy
- Check Engine Light illuminated
2. Most Common Causes
- Faulty transmission fluid temperature sensor
- Open or short circuit in TFT sensor wiring
- Low transmission fluid level
- Damaged TCM or internal fault
3. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Inspect transmission fluid level and condition.
Step 3: Test TFT sensor resistance and compare to specifications.
Step 4: Check wiring and connectors for damage or corrosion.
Step 5: If sensor and wiring are OK, test TCM output signals.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as the transmission may operate in a cold mode, causing harsh shifts and potential internal damage. Have it diagnosed promptly.
How much does it cost to fix?▼
Typical repair costs range from $50 to $150 for sensor replacement, plus diagnostic fees. Wiring repairs may add $50-$100.
5. Commonly Affected Makes
This is a manufacturer-specific code. The exact manufacturer is not confirmed in our current database.