2010 Porsche Panamera Turbo (970) V8-4.8L Turbo A L L Diagnostic Trouble Codes ( DTC ): P Code Charts Page 555
- 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)
- Impermissibly large deviation of the measured air mass from the calculated air mass. (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.
3. A note to this effect is stored in the environmental data for the fault entry value >XX-Status of throttle valve adaptation conditions<.
- The value indicates whether the throttle valve was taught under violated boundary conditions.
- 0 ... 127 = Throttle valve was taught under the correct boundary conditions.
- 128 ... 255 = Throttle valve was taught under violated boundary conditions.
P1073
P1073
Diagnosis information - Control unit DME (DFI)
Mass air flow range near idle speed, implausible too low
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
- Throttle valve adaptation performed while boundary conditions are violated. (See [Information 2])
- Throttle adjusting unit soiled
- Air guide forward Throttle valve Blocked / Cross section Narrowed
- Exhaust system Blocked / Cross section Narrowed
- Intake manifold pressure sensor - Electrical plug connection loose, oxidized, corroded, interrupted
- Tank vent Faulty - Closed (mechanical / electric)
- 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)
- Impermissibly large deviation of the measured air mass from the calculated air mass. (See [Information 1])
INFORMATION
1. 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.
2. A note to this effect is stored in the environmental data for the fault entry value >XX-Status of throttle valve adaptation conditions
conditions<.
- The value indicates whether the throttle valve was taught under violated boundary conditions.
- 0 ... 127 = Throttle valve was taught under the correct boundary conditions.
- 128 ... 255 = Throttle valve was taught under violated boundary conditions.
