What Does P0719 Mean?
The input/turbine speed sensor circuit is producing intermittent signals. Similar to P0718, this code indicates sporadic signal loss from the sensor that monitors transmission input shaft speed. The TCM loses its ability to track torque converter slip and gear ratios during the dropouts, potentially causing drivability complaints.
Common Causes
35%
Corroded or loose input speed sensor electrical connection
25%
Intermittently failing input speed sensor
20%
Wiring fault with intermittent continuity (vibration-sensitive break)
10%
Partially damaged reluctor ring causing periodic signal irregularity
10%
Poor sensor mounting causing variable air gap
Diagnostic Steps
1
Data-log the ISS sensor PID during an extended test drive covering various speeds and gear ranges. Look for momentary signal dropouts or spikes that don't match driving conditions.
2
Perform a thorough connector inspection at the sensor and TCM ends. Look for corrosion, backed-out pins, and verify terminal retention.
3
Wiggle-test the harness from sensor to TCM while monitoring live data. Move in short segments to isolate the fault location.
4
Remove the sensor and inspect for debris, cracks, or physical damage. Check the mounting bore and O-ring seal for fluid leaks that could contaminate the connection.
5
If no wiring fault is found, replace the input speed sensor. Many intermittent sensor faults are due to internal cracking of the pickup coil windings.
Estimated Repair Cost
$100 - $500
Parts + labor, varies by vehicle and location
The input/turbine speed sensor circuit is producing intermittent signals. Similar to P0718, this code indicates sporadic signal loss from the sensor that monitors transmission input shaft speed. The TCM loses its ability to track torque converter slip and gear ratios during the dropouts, potentially...
The most common cause of P0719 (Input/Turbine Speed Sensor Circuit Intermittent) is: Corroded or loose input speed sensor electrical connection
Typical repair costs for P0719 range from $100 to $500, depending on the vehicle, location, and whether you do it yourself or go to a shop.
The vehicle may experience unexpected shift quality changes during signal dropouts. If the TCM enters limp mode, the vehicle may be limited to a single gear. Avoid highway driving if shifting is erratic and have the sensor circuit repaired promptly.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0719 to identify the root cause.
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Quick Info
Category
Powertrain
System
Transmission
Difficulty
Type
Generic (SAE)
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