Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBMW2008M5 (E60) V10-5.0L (S85)REPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONP CODE CHARTSP112D
2008 BMW M5 (E60) V10-5.0L (S85)
P112D
2008 BMW M5 (E60) V10-5.0L (S85)SECTION P112D
2751 - P112D
Information saved in
DME
Fault code
2751 - P112D
Fault text
Bank 2 pre-catalyst oxygen sensor pumping current wire
fault
Fault description
Condition for fault identification
Test condition:
Condition analog to oxygen sensor plausibility diagnosis /
SA diagnosis
Terminal condition: Engine running -
idle or partial load
Voltage condition:
none
Condition for fault memory entry
Lambda AF ratio lies within this range
K_LAVK_OBD_PLAU_LAM_Min and
K_LAVK_OBD_PLAU_LAM_Max however the post-cat
lambda is outside the range
K_LAVK_OBD_PLAU_LANK_Max and
K_LAVK_OBD_PLAU_LANK_Min OR oxygen sensor
voltage is less than K_LAVK_OBD_SA_SC
Action in service
1. Check plug and wiring harness at Bank 2 pre-catalyst
oxygen sensor (especially IP pumping current)
2. If OK, replace sensor
Fault effect and breakdown warning
MIL lamp on after engine runs 2x / Small influence on
drivability
Driver information
Warning light:
No
Service instruction
none
Information saved in
DME
Fault code
2751 - P112D
Fault text
Bank 2 pre-catalyst oxygen sensor pumping current wire
fault
Fault description
Condition for fault identification
Test condition:
Condition analog to oxygen sensor plausibility diagnosis /
SA diagnosis
Terminal condition: Engine running -
idle or partial load
Voltage condition:
none
Condition for fault memory entry
Lambda AF ratio lies within this range
K_LAVK_OBD_PLAU_LAM_Min and
K_LAVK_OBD_PLAU_LAM_Max however the post-cat
lambda is outside the range
K_LAVK_OBD_PLAU_LANK_Max and
K_LAVK_OBD_PLAU_LANK_Min OR oxygen sensor
voltage is less than K_LAVK_OBD_SA_SC
Action in service
1. Check plug and wiring harness at Bank 2 pre-catalyst
oxygen sensor (especially IP pumping current)
2. If OK, replace sensor
Fault effect and breakdown warning
MIL lamp on after engine runs 2x / Small influence on
drivability
Driver information
Warning light:
No
Service instruction
none
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.