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2003
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525i Sedan (E39) L6-2.5L (M54)
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Oxygen Sensor
Oxygen Sensor
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Locations
B62101: Heated Oxygen Sensor 1 Upstream of Catalytic Converter
B62101, X62101 (DME ME7.2)
B62101, X62101 (DME MSS52)
B62101, X62101 (DME MS43)
B62102: Heated Oxygen Sensor 1 Downstream of Catalytic Converter
B62102, B62202 (DME ME7.2)
B62102, X62102 (DME MSS52)
B62102, B62202 (DME MS43)
B62201: Heated Oxygen Sensor 2 Upstream of Catalytic Converter
B62201, X62201 (DME ME7.2)
B62201, X62201 (DME MSS52)
B62201, X62201 (DME MS43)
B62202: Heated Oxygen Sensor 2 Downstream of Catalytic Converter
B62102, B62202 (DME ME7.2)
B62202, X62202 (DME MSS52)
B62102, B62202 (DME MS43)
Service and Repair
Replacing Both Oxygen Control Sensors
Replacing Both Oxygen Monitor Sensors
Replacing Lambda Control Sensor
Replacing Both Lambda Monitor Sensors
Specifications
