What Does P083D Mean?
The TCM has detected that the voltage on the transmission fluid pressure sensor/switch "G" circuit is above the maximum expected threshold. This high signal condition indicates an open circuit, disconnected sensor, or short to voltage in the wiring. The TCM substitutes a default pressure value, which may cause suboptimal shift quality.
Common Causes
35%
Open or failed transmission fluid pressure sensor G
25%
Disconnected sensor connector inside the transmission
20%
Open circuit in signal wiring between sensor and TCM
15%
Short to battery voltage in the signal wire
5%
TCM connector or internal fault
Diagnostic Steps
1
Check the pressure sensor G PID in live data — a reading at or near maximum voltage (e.g., 5V) confirms the high circuit condition.
2
Inspect the sensor connector for proper seating, especially after recent transmission service; reattach if disconnected.
3
Measure the sensor resistance — an open or infinite reading indicates sensor failure.
4
With the sensor disconnected, check for a short to battery voltage on the signal wire.
5
Verify continuity of the signal, ground, and reference wires from the sensor connector to the TCM connector.
Estimated Repair Cost
$200 - $800
Parts + labor, varies by vehicle and location
The TCM has detected that the voltage on the transmission fluid pressure sensor/switch "G" circuit is above the maximum expected threshold. This high signal condition indicates an open circuit, disconnected sensor, or short to voltage in the wiring. The TCM substitutes a default pressure value, whic...
The most common cause of P083D (Transmission Fluid Pressure Sensor/Switch "G" Circuit High) is: Open or failed transmission fluid pressure sensor G
Typical repair costs for P083D range from $200 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Shift quality will be compromised and the transmission may enter limp mode. The vehicle is drivable for short distances but should be repaired promptly to prevent potential internal transmission damage.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P083D to identify the root cause.
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Quick Info
Category
Powertrain
System
Automatic Transmission
Difficulty
Type
Generic (SAE)
Recommended Tools
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