Meritor wabco/park brake relay valves
Defect Summary
Equipment description: two and four port relay valves manufactured between september 19, 2000, and february 10, 2001. these valves are used to control either the service brake system or park brake systems on tractors, trucks, and trailers. the valve may stick open when a high- pressure application is released. these valves can be identified with a date code on the valve of 380k, 390k, 400k, 410k, 420k, 430k, 440k, 450k, 460k, 470k, 480k, 490k, 500k, 510k, 520k, 011k, 021k, 031k, 041k, 051k, or 061k, and are dark green in color. when the valve sticks open, it can result in a total loss of air from either the service or the park brake system.
Safety Consequence
The driver may lose braking ability under a service application, possibly resulting in a vehicle crash.
Corrective Action
Meritor wabco will contact the affected vehicle manufacturers and request that they notify vehicle owners to have the affected relay valves replaced or rebuilt free of charge.
Similar Recalls
Other recalls from Meritor Wabco Vehicle Control Systems or involving Service Brakes, Air.
FAQ: Recall 01E020001
Your rights, the repair process, and what each field on this page means.
What is recall 01E020001?
NHTSA recall 01E020001 was issued by Meritor Wabco Vehicle Control Systems on May 22, 2001. It addresses: Meritor wabco/park brake relay valves. The recall affects approximately 12,700 vehicles, with the defect involving the Service Brakes, Air component.
How do I get this recall repaired?
Contact any authorized Meritor Wabco Vehicle Control Systems dealer and reference NHTSA recall ID 01E020001 or the manufacturer campaign number NR (Not Reported). Under federal law, the repair is completely free regardless of vehicle age or owner history.
Is my vehicle included in this recall?
The only way to confirm is to look up your 17-character VIN at nhtsa.gov/recalls. NHTSA's tool will tell you if VIN-by-VIN this exact recall applies.
How long do I have to get a recall repair done?
There is no expiration on most federal safety recalls. Even if your vehicle is years old and you bought it used, the manufacturer is required to perform the repair at no cost.
Where does the data on this page come from?
All information on this page is sourced directly from the U.S. Department of Transportation public dataset for NHTSA recalls. Last refreshed: 2026-05-22. For the most current official notice, visit nhtsa.gov/recalls.