Fault code 33 and 59

[gpc]

I have been having problems with the battery going flat after my 2001 996 Carrera4 has been locked for 2/3 days. I have changed the ignition switch after reading various topics on this site but with no difference. Took car to Porsche who said it was "psgr door lock opener" so I changed the passenger (LHS) door lock but with no difference. They wanted stupid money to investigate it fully. I have now tested with Durametric and fault codes 33 and 59 come up.

33 No passenger compartment monitoring, interior monitoring sensor faulty, status: not present, number of times DTC present: 1.

59 Central locking limit position safe not reached, open circuit or short to ground, status: not present, number of times DTC present: 5.

What does all this mean? Can I fix it myself?

[gpc]

Last night had to get up at 03.00am due to alarm going off, (because of low battery voltage,) waking up the neighbours! Can anyone help me solve the problem of fault 33 and fault 59?

[Loren]

Fault code 33 -- Passenger compartment: monitoring sensor faulty

Possible cause of fault

- Passenger compartment monitoring faulty

Replace passenger compartment monitoring sensor.

Fault code 59 -- Central locking limit position . safe not reached

Possible cause of fault

- Short circuit to ground/open circuit in wiring between the alarm system control module and both door locks

- Door lock faulty

- Control module faulty

1. Check fuse C3

2. Check door wiring (for chaffing or shorts)

3. Replace door lock