Common Problems with the
2009–2012 Porsche 911 (997)

We've identified 2 known issues that can affect the 2009–2012 Porsche 911 (997). 1 of these are serious faults that could be expensive to repair.

Known Issues

Serious

Moderate

Minor

The 2009–2012 period has 1 more issue than the Porsche 911 (997) average across all year periods.

All Known Issues

PDK Distance Sensor Failure

SeriousGearbox & Transmission

An internal sensor in the PDK gearbox fails, rendering the car undriveable. Porsche dealers typically quote £20,000–£30,000 for a full gearbox replacement as they do not repair internal parts. However, UK specialists like Ninemeister and Zuffenhaus can now repair the unit by replacing the faulty component with an upgraded T-Design9 sensor.

Most affected: Gen 2 997 and 991.1 with PDK

Estimated cost: £4,500–£7,000 (Specialist Repair)Affects: 2009–2012Often appears around: 30k-70k miles

Typical symptoms

•Transmission fault warning
•Emergency transmission mode
•Loss of reverse/even gears
•Fault codes P1731, P1732, P1735

What to inspect before you buy

✓Check for smooth shifts
✓Scan for PDK-specific fault codes
✓Ask if the gearbox has already been repaired by a specialist

Cracked Ignition Coil Packs

ModerateEngine

The coil packs on 997 engines are prone to cracking and failing, causing misfires. A relatively inexpensive fix but common across all variants.

Most affected: All models

Estimated cost: £200–£400Affects: 2005–2012Often appears around: 30k-60k miles

Typical symptoms

•Engine misfire
•Check engine light
•Rough idle
•Hesitation under acceleration

What to inspect before you buy

✓Scan for misfire codes
✓Inspect coil packs for visible cracks

Buying Tips for the 2009 Porsche 911 (997)

✓On 997.1 models, check if an IMS retrofit or a larger factory bearing is fitted.
✓Look for sootier residue on the left exhaust tip, which can be an early sign of bore scoring.
✓Verify the operation of the PASM dampers; leaking struts are common on S models.

2005–2008 Porsche 911 (997)