Professional Valve Body Testing
Accurate testing for automatic and DSG valve bodies to diagnose pressure loss, solenoid faults and hydraulic failures before costly rebuilds.
What is valve body testing?
The valve body is the heart of your automatic gearbox. It controls fluid flow and directs hydraulic pressure to engage gears smoothly. When valves stick or solenoids fail, you’ll feel harsh shifts, flares, or loss of drive. Valve body testing isolates the fault quickly, saving unnecessary replacement or rebuild costs.
Common Symptoms
- Harsh or delayed gear changes
- Flare or slip during acceleration
- Loss of certain gears or limp mode
- Jerking when coming to a stop
- Warning lights or transmission faults
Possible Causes
- Worn or sticking valve spools
- Leaking internal seals or gaskets
- Faulty or weak solenoids
- Contaminated transmission fluid
- Electrical signal faults from the control unit
Why choose STA Aylesbury for valve body testing
- State-of-the-art hydraulic and solenoid test benches
- Accurate pressure, flow and response testing under load
- Factory-level data for DSG, ZF, and CVT systems
- Rebuild or replacement options available after test
- Thousands of valve bodies tested and verified
Our valve body testing process
- 1
Initial Diagnostics
Scan for solenoid codes and review pressure control data.
- 2
Valve Body Removal
Safely remove the valve body for bench inspection.
- 3
Bench Testing
Simulate operating pressure and solenoid response to detect faults.
- 4
Reporting & Advice
We provide results with honest recommendations on repair or rebuild.
Precision testing. Proven accuracy.
STA Aylesbury are trusted by garages and owners nationwide for expert valve body testing and rebuild advice.
Valve Body Testing FAQ
Can a valve body be repaired after testing?
Yes. Many faults can be fixed by replacing solenoids or resealing valves after testing.
Which gearboxes do you test?
We test DSG, ZF, CVT and other automatic valve bodies using manufacturer data and tooling.
How long does testing take?
Most tests are completed within one working day depending on gearbox type.
Do you provide a report?
Yes. Every valve body test comes with a detailed report showing pressure values and solenoid results.
Need valve body testing?
Book a professional valve body test today and avoid unnecessary gearbox repairs.