2010 Porsche Panamera Turbo (970) V8-4.8L Turbo A L L Diagnostic Trouble Codes ( DTC ): P Code Charts Page 421
- Valve lifter Faulty
(Intake valve has not switched to the other lift or has not switched quickly enough)
- Mechanical fault Valve drive
- Compression too low
(e.g. Cylinder lining damaged, Valve-seat ring Faulty ...)
Fault setting condition(s) (See [Information])
- 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.
INFORMATION
- It is possible that only one cylinder (or the cylinders of one bank) has/have exceeded the uneven running threshold for a fault entry.
- Other cylinders may be just below the level which would result in a fault entry.
- See Actual values:
- [M005_Rough running ...] ... [M080_Rough running ...]
P0326
P0326
Diagnosis information - Control unit DME (DFI)
Knock sensor 1
Diagnostic conditions
- Short test
or
- Engine running, at:
- Period since engine was started > 10 Second(s)
- Engine temperature > 50 锟斤拷C (锟斤拷F)
- Engine speed > 1,000 1/min
- different load ranges
Possible fault causes
- Loose contact or corrosion on connectors or lines
- Short circuit to ground or open circuit in lines
- Knock sensor 1 loose
- Knock sensor 1 Faulty
Fault setting condition(s)
- The fault is detected if the signal of the knock sensor changes insufficiently or is too weak (noise is >>quieter<< than expected).
Fault effects
- If the fault is stored, the ignition timing is retarded for all cylinders affecting this knock sensor in the >knock-control active< range.
- Knock control adaptation is idle.
P0327
P0327
Diagnosis information - Control unit DME (DFI)
Knock sensor 1
Diagnostic conditions
- Short test
or
- Engine running, at:
- Period since engine was started > 10 Second(s)
- Engine temperature > 50 锟斤拷C (锟斤拷F)
- Engine speed > 1,000 1/min
- different load ranges
Possible fault causes
- Loose contact or corrosion on connectors or lines
- Short circuit to B+/ground/between lines or open circuit in the lines
- Knock sensor 1 loose or braced