P0716: Input/Turbine Speed Sensor A Circuit Range/Performance
The P0716 code indicates that the Powertrain Control Module (PCM) has detected an erratic, intermittent, or out-of-range signal from the input/turbine speed sensor (also known as the transmission speed sensor). This sensor monitors the rotational speed of the turbine shaft inside the torque converter. The PCM uses this data to control shift timing, line pressure, and torque converter clutch engagement. A faulty signal can cause improper transmission operation, leading to harsh shifts, slipping, or even transmission damage if ignored.
1. Symptoms You Will Notice
- Check Engine Light illuminated
- Harsh or erratic shifting
- Transmission slipping or delayed engagement
- Reduced fuel economy
2. Most Common Causes
- Faulty input/turbine speed sensor
- Damaged or corroded wiring/connectors to the sensor
- Low transmission fluid level or contaminated fluid
- Internal transmission mechanical failure (e.g., damaged turbine shaft or torque converter)
3. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data. Check transmission fluid level and condition.
Step 2: Visually inspect the sensor and wiring for damage, corrosion, or loose connections.
Step 3: Use a multimeter to test sensor resistance and compare to manufacturer specs (typically 200-600 ohms).
Step 4: If sensor and wiring are okay, perform a circuit integrity test (continuity, shorts to ground/power).
Step 5: If all electrical tests pass, suspect internal transmission issues; consult a professional for further diagnosis.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended. Driving with P0716 can cause harsh shifting, transmission slipping, and potential internal damage. Have it diagnosed and repaired promptly.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for sensor replacement if that is the issue. However, if internal transmission damage is found, costs can exceed $1,500.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.