2010 Porsche Panamera Turbo (970) V8-4.8L Turbo A L L Diagnostic Trouble Codes ( DTC ): P Code Charts Page 567
Diagnostic conditions
- Driving with slight acceleration (See [Information]), at:
- Large stroke (Actual value A220 = 1):
- Period since engine was started > 5 Minute(s)
- Engine speed 1,250 ... 2,200 1/min (Actual value A020)
- Mass air flow 300 ... 600 mg/stroke (Actual value A050)
- then Driving with slight acceleration, at:
- Small stroke (Actual value A220 = 0):
- Period since engine was started > 5 Minute(s)
- Engine speed 1,250 ... 2,200 1/min (Actual value A020)
- Mass air flow 180 ... 350 mg/stroke (Actual value A050)
Possible fault causes
- Engine oil pressure too high or too low
- Loose contact or corrosion on connectors or lines (Power supply Solenoid valve, hydraulic valve lift control)
Fault setting condition(s)
- Diagnosis detects via the camshafts' vibration behavior that all the valves have either not switched to the other lift or have not switched quickly
enough during valve lift switchover.
INFORMATION
A trip with the aforementioned conditions can be performed as follows, for example:
- Engine at operating temperature
- Level route
- Driving in 5th gear (manual)
- Vehicle rolls at approx. 50 km/h / 31 mph (approx. 1,000 rpm)
- This is followed by uniform acceleration to 2,200 rpm, at:
- Acceleration not too high (Mass air flow < 600 mg/stroke - Actual value A050) and
- Acceleration not too low (Large stroke - Actual value A220 = 1)
P1359
P1359
Diagnosis information - Control unit DME (DFI)
Valve lift control Cylinder 1 - Large stroke
Diagnostic conditions
- Driving with Partial load
- > 5 Minute(s)
- Engine speed 1250...3000 1/min
- Mass air flow 180...500 mg/stroke
- then Idle speed
- > 2 Minute(s)
- Engine speed 500...1000 1/min
- Mass air flow 90...250 mg/stroke
Possible fault causes
- Injection valve Faulty or Borderline
(opens too late / not long enough / not enough or leaks)
- Bar ignition module Faulty
- Compression too low
(e.g. Cylinder lining damaged, Valve-seat ring Faulty ...)
- Valve lifter Faulty
(Intake valve has not switched to the other lift or has not switched quickly enough)
Fault setting condition(s)
- Diagnosis detects uneven running for the specified cylinder.
- Uneven running is calculated from the expected and actual crankshaft acceleration due to combustion.
- Uneven running is interpreted as a misfire or valve lift fault, depending on type.
P1360
P1360
Diagnosis information - Control unit DME (DFI)
Valve lift control Cylinder 6 - Large stroke
