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.
SYS.OK|MANUAL.DBβ LIVE
HOMESERVICE MANUALSBMW2006X5 (E53) V8-4.8L (N62)REPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONMANUFACTURER CODE CHARTSENGINE CONTROLS SYSTEM2C4F
2006 BMW X5 (E53) V8-4.8L (N62)
2C4F
2006 BMW X5 (E53) V8-4.8L (N62)SECTION 2C4F
2C4F - P2626
Information saved in
DME
Fault code
2C4F - P2626
Fault text
Oxygen sensor before catalytic converter, calibration cable
Fault description
O2 Sensor Pumping Current Trim Circuit/Open (Bank 1
Sensor 1)
Condition for fault identification
Test condition:
Monitoring on disconnected calibration wire (IA);
Diagnosis conditions:
- Trailing-throttle overrun abort present for at least 2 sec.
- Voltage at CJ125 > 4.8 V
- O2 sensor heated to adequate temperature
- Exhaust-gas temp. (model) before cat. < 750 οΏ½C
Terminal condition: Engine running
Voltage condition:
battery voltage<11V oder Ubatt > 16 volts
Condition for fault memory entry
Fault monitoring criterion must remain present over 1 sec.
Action in service
Check plug / wiring harness / O2 wiring, otherwise replace
O2 sensor
Fault effect and breakdown warning
Driver information
Warning light:
MIL on (in 2nd driving cycle);
Service instruction
none
Information saved in
DME
Fault code
2C4F - P2626
Fault text
Oxygen sensor before catalytic converter, calibration cable
Fault description
O2 Sensor Pumping Current Trim Circuit/Open (Bank 1
Sensor 1)
Condition for fault identification
Test condition:
Monitoring on disconnected calibration wire (IA);
Diagnosis conditions:
- Trailing-throttle overrun abort present for at least 2 sec.
- Voltage at CJ125 > 4.8 V
- O2 sensor heated to adequate temperature
- Exhaust-gas temp. (model) before cat. < 750 οΏ½C
Terminal condition: Engine running
Voltage condition:
battery voltage<11V oder Ubatt > 16 volts
Condition for fault memory entry
Fault monitoring criterion must remain present over 1 sec.
Action in service
Check plug / wiring harness / O2 wiring, otherwise replace
O2 sensor
Fault effect and breakdown warning
Driver information
Warning light:
MIL on (in 2nd driving cycle);
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.