2010 Porsche Panamera Turbo (970) V8-4.8L Turbo A L L Diagnostic Trouble Codes ( DTC ): P Code Charts Page 556
Diagnosis information - Control unit DME (DFI)
Mass air flow lower partial-load range, implausible too high
Diagnostic conditions
- 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
- Intake pipe switchover Mechanical fault (if present)
- 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])
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.
P1075
P1075
Diagnosis information - Control unit DME (DFI)
Mass air flow lower partial-load range, implausible too low
Diagnostic conditions
- 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 adjusting unit soiled
- Air cleaner soiled / Blocked / iced up
- Air intake (forward Air cleaner) Narrowed
- Air guide forward Throttle valve Blocked / Cross section Narrowed
- Exhaust system Blocked / Cross section Narrowed
- Intake pipe switchover Mechanical fault (if present)
- 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])
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.
P1076
P1076
Diagnosis information - Control unit DME (DFI)
Mass air flow upper partial-load range, implausible too high
