Porsche
911
9

Brake hydraulic pump relay stays on on Porsche 911

Problem Description and Possible Solution
The hydraulic pump relay can fail, causing the pump to run continuously, which leads to hydraulic pump failure due to overheating. Incorrect pressures will cause a low brake pedal or a high pedal effort with the possibility of other strange symptoms.
Problem Data
RepairPal Verified
Average mileage: (–)
9 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 1996, 1997, 1998
9 people reported this problem