2010 Porsche Panamera Turbo (970) V8-4.8L Turbo A L L Diagnostic Trouble Codes ( DTC ): P Code Charts Page 554
INFORMATION
In this diagnosis, the intake system between the throttle valve and the engine (intake valves) is monitored.
- A mass air flow is calculated from the signals from the throttle potentiometer, engine speed sensor, intake air temperature sensor and ambient
pressure sensor as well as other engine operating values.
- The calculated mass air flow is compared with that measured by the pressure sensor.
- A deviation may be due to both the calculated mass air flow and the measured mass air flow.
P1071
P1071
Diagnosis information - Control unit DME (DFI)
Mass air flow range near idle speed, implausible too high
Diagnostic conditions
- Idle speed > 30 s,
- then Engine speed > 1,500 1/min > 1 s,
- then Idle speed > 30 s
- none of the following faults stored : Intake manifold pressure sensor, Throttle adjusting unit, Ambient pressure sensor, Intake air temperature
sensor, Speed sensor, Valve lift control, Camshaft adjustment, Intake pipe switchover
Possible fault causes
- Oil filler cap lost
- Positive crankcase ventilation hose leaks (See [Information 1])
- Intake system leaks - between Throttle valve and Engine (Intake valve)
- Tank vent Faulty - open
- Intake manifold pressure sensor - Electrical plug connection loose, oxidized, corroded, interrupted
- Fault in area Intake manifold pressure sensor, Throttle adjusting unit, Ambient pressure sensor, Intake air temperature sensor, Speed sensor,
Valve lift control, Camshaft adjustment, Intake pipe switchover
Fault setting condition(s)
- Excessive deviation of the mass air flow within an engine operating period at the current idle compared to the last idle, at which the mass air
flow was still within the tolerance range (e.g. hose fell off, ...).
(See [Information 2])
INFORMATION
1. - only Turbo
The following components are NOT tested during an overpressure test of the intake duct:
- Check valve for ventilation (Intake distributor)
- Check valve for ventilation (Suction hose Turbocharger)
- Positive crankcase ventilation hose between Check valve for ventilation and Crankcase
- Crankcase
2. In this diagnosis, the intake system between the throttle valve and the engine (intake valves) is monitored.
- A mass air flow is calculated from the signals from the throttle potentiometer, engine speed sensor, intake air temperature sensor and
ambient pressure sensor as well as other engine operating values.
- The calculated mass air flow is compared with that measured by the pressure sensor.
- A deviation may be due to both the calculated mass air flow and the measured mass air flow.
P1072
P1072
Diagnosis information - Control unit DME (DFI)
Mass air flow range near idle speed, implausible too high
Diagnostic conditions
- Idle speed > 2 Minute(s)
- Trip with different operating conditions
- none of the following faults stored: Intake manifold pressure sensor, Throttle adjusting unit, Ambient pressure sensor, Intake air temperature
sensor, Speed sensor, Valve lift control, Camshaft adjustment, Intake pipe switchover
Possible fault causes
- Oil filler cap leaks
- Throttle valve adaptation performed while boundary conditions are violated.(See [Information 3])
- Positive crankcase ventilation hose leaks (See [Information 1])
