LEMON Manuals: Even more car manuals for everyone
Home >> BMW >> 2021 >> 840i 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 212 (Oxygen Sensors -- Repair (G02)) >> 11 78 Oxygen Sensors >> 11 78 510 Replacing oxygen sensor (after vehicle diagnosis) (X4 xDrive30i 2022-) >> Installing Lambda oxygen sensor

Installing Lambda oxygen sensor

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2025 BMW X4, 2024 BMW X4, 2023 BMW X4, 2022 BMW X4, and 2021 BMW X4. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: TECHNICAL INFORMATION 
Grease the threads of new oxygen sensors thinly and evenly.
For oxygen sensors that are reused, the following should be observed:
Thinly and evenly grease the oxygen sensor on the thread only. Do not clean the part of the oxygen sensor that does not protrude into the exhaust line (sensor ceramics) and do not grease.
For additional information see: OVERVIEW OF CONSUMABLES (BMW PARTS CATALOGUE) .
NOTE: TECHNICAL INFORMATION 
For additional information see: OVERVIEW OF CONSUMABLES (BMW PARTS CATALOGUE) .
NOTE: The cable of the Lambda oxygen sensor is black. The installation location of the Lambda oxygen sensor is in front of the catalytic converter.
TIGHTENING TORQUES SPECIFICATION

Lambda control sensor 
M18x1.5 Tightening torque  50 Nm
G14234750Courtesy of BMW OF NORTH AMERICA, INC.
G14234748Courtesy of BMW OF NORTH AMERICA, INC.
G14234746Courtesy of BMW OF NORTH AMERICA, INC.
TIGHTENING TORQUES SPECIFICATION

Holder, positive battery cable to cylinder head cover 
6X18 Tightening torque  6 Nm
CAUTION: Improper routing of the positive battery cable. 
Risk of short circuits! 
  • Route the positive battery cable without abrasions and do not trap.
G14234747Courtesy of BMW OF NORTH AMERICA, INC.
TIGHTENING TORQUES SPECIFICATION

Holder, positive battery cable to cylinder head cover 
6X18 Tightening torque  6 Nm
G14206991Courtesy of BMW OF NORTH AMERICA, INC.

Connector (1) must engage audibly.

G12701458Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work