What Does P0992 Mean?
DTC P0992 indicates a general malfunction in the transmission fluid pressure sensor or switch "F" circuit. The TCM is unable to obtain a valid pressure signal from sensor/switch "F," which monitors a specific hydraulic circuit within the transmission. This loss of feedback can degrade shift quality and may cause the TCM to adopt conservative shift strategies.
Common Causes
35%
Defective transmission fluid pressure sensor/switch "F" with no output or erratic signal
25%
Open or shorted wiring in the sensor "F" circuit between the transmission and TCM
20%
Corroded or damaged connector at the pressure sensor or at the transmission case pass-through
10%
Transmission fluid contamination blocking the sensor pressure port
10%
TCM input circuit fault preventing proper reading of sensor "F" data
Diagnostic Steps
1
Read live data for pressure sensor "F" to determine whether the signal is absent, fixed, or erratic.
2
Inspect the pressure sensor "F" connector and wiring for physical damage, corrosion, or ATF contamination.
3
Verify the sensor is receiving proper reference voltage (typically 5V) and has a solid ground connection.
4
Measure the sensor output signal voltage and compare it to expected values at idle; a signal stuck at 0V or 5V indicates a circuit fault.
5
If electrical checks are normal, install a mechanical pressure gauge at the same circuit to verify actual hydraulic pressure matches the sensor reading.
6
Replace the sensor if it is confirmed faulty; clear codes and perform a road test to verify normal pressure feedback.
Estimated Repair Cost
$150 - $600
Parts + labor, varies by vehicle and location
DTC P0992 indicates a general malfunction in the transmission fluid pressure sensor or switch "F" circuit. The TCM is unable to obtain a valid pressure signal from sensor/switch "F," which monitors a specific hydraulic circuit within the transmission. This loss of feedback can degrade shift quality ...
The most common cause of P0992 (Transmission Fluid Pressure Sensor/Switch "F" Circuit) is: Defective transmission fluid pressure sensor/switch "F" with no output or erratic signal
Typical repair costs for P0992 range from $150 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Loss of pressure sensor feedback may result in the TCM applying default pressures that could be too high (harsh shifts) or too low (clutch slippage). While not immediately dangerous, extended driving risks accelerated internal transmission wear.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0992 to identify the root cause.
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Quick Info
Category
Powertrain
System
Transmission
Difficulty
Type
Generic (SAE)
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