Your PSOM could be defective if you are experiencing any of the following symptoms;
- Harsh / delayed transmission shifts
- Rough shifting sending transmission into limp mode
- Code 452 stored in memory
- Over drive light flashing on shifter
- Speedometer completely dead
- Odometer screen is blank / not showing numbers
- Odometer or speedometer intermittently working
- Odometer reads ERROR
- Needle drops to 0 after a certain speed has been reached
- Speedometer needle wavers erratically
- Speedometer needle not calibrated
- Rough idle
- Transmission dropping in and out of neutral
- ABS light on
- Transmission in and out of limp mode
Our rebuilt PSOM can help solve your issues!
Each unit is fully rebuilt and tested thoroughly.
Mileage and tire calibration included!
A hassle free 2-year warranty and 24 -48-hour shipping via priority mail.
$60 core refund with return shipping label included.
Mileage and tire calibraton included. Include your mileage and CAL code in th eoder notes during checkout.
To find CAL code, hold reset button and turn the ignition on- let speedometer needle sweep and press reset again.
If you are interested we also have a repair service starting at $129.00
The Programmable Speedometer Odometer Module a.k.a. the PSOM – located inside your instrument gauge cluster attached behind the speedometer – is responsible for converting the vehicle speed sensor (VSS) into a square wave. This wave instructs the computer when to shift the transmission. When the PSOM is defective due to aging components, corrosion, solder, etc. the wave will be corrupted or missing altogether. This will cause your transmission to shift erratically or jump hard in and out of gear.
Intermittent problems are very common with a defective PSOM. It’s not uncommon for symptoms to appear one day and disappear the next.
If your vehicle speed sensor (VSS) signal is present and moving your speedometer needle but a signal is not passing though the PSOM, your issue is most likely the PSOM.
Don’t let harsh shifting ruin your E40D transmission!
This PSOM is a compatible with any of these part numbers: F3UF-14A608-DA | F5UF-14A608-AA | F6UF-14A608-AA | PWB-2256 | PWB-3855 | PWB3989
To remove the PSOM from the cluster, simply unscrew the lens with the black housing away from cluster. Pull the gauge pods away from the cluster (left and right of the speedometer. You do not need to remove needles; the gauges simply pull away from the cluster in sections and the speedometer will loosely pull away from the cluster.
Don’t hesitate to reach out if you have any other questions, we are always here to help!