2010 Porsche Cayenne S (9PA) V8-4.8L A L L Diagnostic Trouble Codes ( DTC ): P Code Charts Page 66
2010 Porsche Cayenne S (9PA) V8-4.8L A L L Diagnostic Trouble Codes ( DTC ): P Code Charts Page 66
- Engine running (driving)
Fault setting conditions
- Continuous average fuel high pressure < 10 bar
or
- Continuous average fuel high pressure > 135 bar
Possible fault causes
- Only if the value is below the lower limit:
- Predelivery quantity or pressure in fuel low-pressure circuit too low
- Tank (almost) (driven) empty
- refer to the fault memory under
--> >[F8] INFORMATION<<
--> >[F8] EXTENDED FAULT MEMORY<
--> Value >Fuel Level Input<
--> The value is then [0%]
- If the value is below or exceeds the limits:
- Quantity control valve faulty (in fuel high-pressure pump)
- Fuel high-pressure pump faulty
P1090
P1090
Diagnosis information - DME V8 DFI
Mass air flow sensor - limit value exceeded / limit value not reached
Diagnostic conditions
- Vehicle voltage > 9 V
- Engine running
Possible fault causes
- Short circuit to B+/ground/between lines or open circuit in the lines
- Mass air flow sensor faulty
(setpoint voltage with stopped engine and ignition on = 0.9 ... 1.1 V
- see Actual values, Filter [MAF], [Mass air flow 1 (sensor)] + [Mass air flow 2 (sensor)])
P1091
P1091
Diagnosis information - DME V8 DFI
Mass air flow sensor - limit value exceeded / limit value not reached
Diagnostic conditions
- Vehicle voltage > 9 V
- Engine running
Possible fault causes
- Short circuit to B+/ground/between lines or open circuit in the lines
- Mass air flow sensor faulty
(setpoint voltage with stopped engine and ignition on = 0.9 ... 1.1 V
- see Actual values, Filter [MAF], [Mass air flow 1 (sensor)] + [Mass air flow 2 (sensor)])
P1092
P1092
Diagnosis information - DME V8 DFI
Mass air flow sensor - limit value exceeded / limit value not reached
Diagnostic conditions
- Vehicle voltage > 9 V
- Engine running
Possible fault causes
- Short circuit to B+/ground/between lines or open circuit in the lines
- Mass air flow sensor faulty
(setpoint voltage with stopped engine and ignition on = 0.9 ... 1.1 V
- see Actual values, Filter [MAF], [Mass air flow 1 (sensor)] + [Mass air flow 2 (sensor)])
