Your transmission fluid pressure sensor is sending inconsistent signals to the engine computer, like a light switch that flickers on and off. The ECU can't reliably monitor transmission pressure, which could affect shifting quality and protection.
The ECU monitors voltage signals from the transmission fluid pressure sensor to verify hydraulic pressure is adequate during operation. It detects an intermittent circuit when the signal drops out temporarily, indicating a loose connection, corroded contact, or failing sensor. The fault is logged when signal continuity is lost for a brief period.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Sensor Voltage Signal | 0.5–4.5V continuous | Signal dropout or erratic fluctuation |
| Fluid Pressure (inferred) | 20–100 psi (varies by gear) | Signal loss preventing pressure confirmation |