2010 Porsche Panamera Turbo (970) V8-4.8L Turbo A L L Diagnostic Trouble Codes ( DTC ): P Code Charts Page 619
Fault effects
- Power supply switch-off for pressure regulator
- Solenoid valve power supply switch-off
PDK Control Unit, Supply Voltage Greater Than 16.5 V
P1752
Diagnosis information - PDK
PDK control unit, supply voltage > 16.5 V
Diagnostic conditions
The control unit initially tests internal function sequences when the ignition is switched on (terminal 15). If they are OK, all diagnosable outputs are
then tested and any faults are stored.
- Ignition on
- Engine at idle speed
Possible fault causes
- Generator faulty
Fault setting conditions
- Supply voltage > 16.5 V
Fault effects
- Power supply switch-off for pressure regulator
- Solenoid valve power supply switch-off
- Hydraulic control is switched off
- Start enable only in position P
- Limp-home message in instrument cluster
Setpoint Definitions
P1752
Setpoint definitions
NOTE: The specified values and value ranges correspond to the OK state in each case.
Line test setpoints
Short circuit to B+:
- Setpoint voltage -0.5 V --> +0.5 V
Short circuit to ground:
- Setpoint resistance > 0.9 MOhm
Open circuit:
- Setpoint resistance < 2 Ohm
Control unit setpoints
- Supply voltage terminal 30 9.1 V --> 16.4 V
- Voltage, terminal 15 9.5 V --> 16.0 V
Supply Voltage, Undervoltage
P1752
Diagnosis information - PDK
Supply voltage, undervoltage
Diagnostic conditions
The control unit initially tests internal function sequences when the ignition is switched on (terminal 15). If they are OK, all diagnosable outputs are
then tested and any faults are stored.
- Ignition on
- Engine running (stable engine speed 400 rpm)
Possible fault causes
- Control unit power supply lines faulty
