P2A00
P2A00
Diagnosis information - DME V8 DFI
Electric fault, oxygen sensor ahead of cat. converter, bank X
NOTE:
2010 Porsche Cayenne Turbo (9PA) V8-4.8L Turbo Page 2
This fault indicates that the DME control unit has detected an implausible temperature range for the oxygen sensor.
Since lambda control is interrupted at this time, the DME control unit stores this fault as information. The more precise fault cause is stored as a
further P code.
NOTE: Do not use contact spray on the oxygen sensor's plug connections as this will result in irreparable damage to the lines (blockage of
reference air duct).
NOTE: Do not interchange the oxygen sensor ahead of catalytic converter with the sensor behind the catalytic converter as this will result in
implausible fault entries.
Diagnostic conditions
- Engine running > 30 seconds
- Exhaust temperature > 100 °C (212 °F)
- Oxygen sensor ahead of catalytic converter operational
- No overrun fuel shutoff
Possible fault causes
- Other electric oxygen sensor faults are stored in the fault memory
P2A01
P2A01
Diagnosis information - DME V8 DFI
Fuel trim deviation downstream of catalytic converter, bank X
NOTE:
This fault is detected if the oxygen sensor signal behind the catalytic converter deviates so quickly and greatly (rich or lean) that the lambda control
cannot balance the mixture. (e.g. hose on intake pipe has fallen off ...)
At this moment, it is not yet clear what has caused this deviation (mixture fault, electrical fault).
A further diagnosis procedure is initiated which actively checks the sensors ahead of and behind the catalytic converter by specific enrichment and
enleanment of the mixture.
The vehicle must be driven in the same driving cycle (without ignition reset) for this purpose.
Diagnostic conditions
- Engine running > 90 seconds
- All 4 oxygen sensors ready for operation
- No inertia fuel shutoff
Possible fault causes
- Fault in fuel/air mixture
- Fault in exhaust pipe
- Fault in exhaust measurement
- Other faults are stored in the fault memory
P2A00
Diagnosis information - DME V8 DFI
Electric fault, oxygen sensor ahead of cat. converter, bank X
NOTE:
2010 Porsche Cayenne Turbo (9PA) V8-4.8L Turbo Page 2
This fault indicates that the DME control unit has detected an implausible temperature range for the oxygen sensor.
Since lambda control is interrupted at this time, the DME control unit stores this fault as information. The more precise fault cause is stored as a
further P code.
NOTE: Do not use contact spray on the oxygen sensor's plug connections as this will result in irreparable damage to the lines (blockage of
reference air duct).
NOTE: Do not interchange the oxygen sensor ahead of catalytic converter with the sensor behind the catalytic converter as this will result in
implausible fault entries.
Diagnostic conditions
- Engine running > 30 seconds
- Exhaust temperature > 100 °C (212 °F)
- Oxygen sensor ahead of catalytic converter operational
- No overrun fuel shutoff
Possible fault causes
- Other electric oxygen sensor faults are stored in the fault memory
P2A01
P2A01
Diagnosis information - DME V8 DFI
Fuel trim deviation downstream of catalytic converter, bank X
NOTE:
This fault is detected if the oxygen sensor signal behind the catalytic converter deviates so quickly and greatly (rich or lean) that the lambda control
cannot balance the mixture. (e.g. hose on intake pipe has fallen off ...)
At this moment, it is not yet clear what has caused this deviation (mixture fault, electrical fault).
A further diagnosis procedure is initiated which actively checks the sensors ahead of and behind the catalytic converter by specific enrichment and
enleanment of the mixture.
The vehicle must be driven in the same driving cycle (without ignition reset) for this purpose.
Diagnostic conditions
- Engine running > 90 seconds
- All 4 oxygen sensors ready for operation
- No inertia fuel shutoff
Possible fault causes
- Fault in fuel/air mixture
- Fault in exhaust pipe
- Fault in exhaust measurement
- Other faults are stored in the fault memory