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Check Engine Light due to failed leak detection pump or oxygen sensor on Land Rover Discovery

Problem Description and Possible Solution

The Check Engine Light may illuminate due to a defective EVAP leak detection pump or defective a oxygen sensor.

Problem Data
RepairPal Verified
Average mileage: 119,763 (80,000–143,000)
11 model years affected: 1994, 1995, 1996, 1997, more1998, 1999, 2000, 2001, 2002, 2003, 2004
20 people reported this problem