Thursday, 27 June 2019

2010 Porsche Panamera Turbo (970) V8-4.8L Turbo A L L Diagnostic Trouble Codes ( DTC ): P Code Charts Page 356

2010 Porsche Panamera Turbo (970) V8-4.8L Turbo A L L Diagnostic Trouble Codes ( DTC ): P Code Charts Page 356



Synchro 7th Gear Not Engageable Or Gear Skip



P177C



Diagnosis information - PDK



Synchro 7th gear not engageable or gear skip



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



- The following faults are not detected: P1731, P1732, P1733 or P1734



- The following faults are not detected: P1706 or P1707



- Alternative measure HSS3_OFF not active



Possible fault causes



- Hydraulics faulty (hydraulic control unit)



- Transmission faulty



Fault setting conditions



- Target gear 7th gear, actual gear is disengaged before pressure adjusters 5/6 are activated



- 5th gear is engaged instead of 7th gear



- No shift rod moves



NOTE: The individual detection times are temperature-dependent (cold 2 s, warm 1 s)



Fault effects



- Gear held



- Only gears R, 3, 5 and 6 are possible



- Transmission limp-home indication in instrument cluster control unit



Diagnosis Information - PDK (Dual-Clutch Transmission)



P177C



Diagnosis information - PDK



Synchro reverse gear not disengageable



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



- The following faults are not detected: P1731, P1732, P1733 or P1734



- The following faults are not detected: P1706 or P1707



- Alternative measure HSS3_OFF not active



Possible fault causes



- Hydraulics faulty (hydraulic control unit)



- Transmission faulty



Fault setting conditions



- Reverse gear cannot be disengaged



Fault effects



- Gear held



- No gear pre-selection



- Transmission limp-home indication in instrument cluster control unit



Engagement Block, Synchronisation, Or Gear Skip



P177D



Diagnosis information - PDK



Engagement block, synchronisation, or gear skip