Tool Required VB-FIX Required
- B Clutch breakage
- Delayed Reverse
- Erratic line pressure
- No Reverse
- Poor shift quality
Excessive valve and bore clearance due to wear.
The Sonnax oversized valve corrects valve-to-bore clearances and also prevents future wear in this area.
Oversized Pressure Regulator Valve
Early style, E17 vlave body
- Oversized valves have annular oil grooves to support the valve and reduce wear rate.
- Salvages valve body castings.
- Tooling cost recovered in a few jobs
There are two types of ZF5HP19 valve bodies. Version 1, the E17, has a valve with four spools on it, and the speed sensor is mounted on the valve body. Version 1 is used in Audi & VW units only. Version 2, the E18.2, has a valve with five spools on it, and the speed sensor is mounted on the transmission case. Version 2 is used in Audi, VW & BMW units.