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 MANUALSBMW2006X5 (E53) V8-4.8L (N62)REPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONMANUFACTURER CODE CHARTSENGINE CONTROLS SYSTEM2C24
2006 BMW X5 (E53) V8-4.8L (N62)
2C24
2006 BMW X5 (E53) V8-4.8L (N62)SECTION 2C24
2C24 - P0040
Information saved in
DME
Fault code
2C24 - P0040
Fault text
Oxygen sensors before catalytic converter mixed up
Fault description
O2 Sensor Signals Swapped Bank 1 Sensor 1 / Bank 2
Sensor 1
Condition for fault identification
Test condition:
Lambda controllers for the two cylinder banks display
mutual splay exceeding 20 % (factor >1.2 or <0,8)
Terminal condition: Engine running
Voltage condition:
battery voltage<11V oder Ubatt > 16 volts
Condition for fault memory entry
Conditions for monitoring faults must be present longer than
10 seconds from point at which lambda control assumes
active operation
Action in service
Plug in oxygen sensors before cat. correctly, check wiring
harness as indicated, determine whether O2 sensor wires on
the DME module plug are connected to correct terminals.
Fault effect and breakdown warning
Driver information
Warning light:
MIL on (in 2nd driving cycle); possible combustion miss
until fault is detected
Service instruction
none
Information saved in
DME
Fault code
2C24 - P0040
Fault text
Oxygen sensors before catalytic converter mixed up
Fault description
O2 Sensor Signals Swapped Bank 1 Sensor 1 / Bank 2
Sensor 1
Condition for fault identification
Test condition:
Lambda controllers for the two cylinder banks display
mutual splay exceeding 20 % (factor >1.2 or <0,8)
Terminal condition: Engine running
Voltage condition:
battery voltage<11V oder Ubatt > 16 volts
Condition for fault memory entry
Conditions for monitoring faults must be present longer than
10 seconds from point at which lambda control assumes
active operation
Action in service
Plug in oxygen sensors before cat. correctly, check wiring
harness as indicated, determine whether O2 sensor wires on
the DME module plug are connected to correct terminals.
Fault effect and breakdown warning
Driver information
Warning light:
MIL on (in 2nd driving cycle); possible combustion miss
until fault is detected
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.