2014 BMW X3 xDrive35i

Clearing permanent fault codes on a Porsche is different from clearing standard or pending DTCs. Permanent codes are stored by the ECU to prove that an emissions-related fault actually occurred and cannot be manually erased with a scanner—even with PIWIS—until specific conditions are met.

Below is the correct, Porsche-specific explanation and process.

What “Permanent” Codes Mean (Porsche / OBD-II)

• Introduced with OBD-II Mode $0A (roughly 2010+ vehicles)

• Typically emissions-related faults

• Stored to prevent clearing codes just to pass smog

• Scanner “clear codes” will NOT remove them

• Battery disconnect will not help

How Permanent Codes Are Cleared (The Only Way)

1. Fix the Underlying Issue

This is mandatory. The ECU must see the system operating normally.

Common Porsche permanent-code culprits:

• EVAP leaks (gas cap, purge valve, charcoal canister)

• O2 sensor or heater faults

• Secondary air injection issues (very common on older 911s)

• Misfire detection

• Catalyst efficiency codes (P0420 / P0430)

If the fault still exists → the code will stay forever.

2. Complete the Required Drive Cycles

Once repaired, the ECU must:

• Run the relevant monitor

• Pass it successfully

• Do this multiple times

Only then will the ECU self-delete the permanent code.

Typical Porsche Drive Cycle (generalized)

Exact cycle depends on the fault, but this usually works:

1. Cold start (coolant below ~122°F)

2. Idle 2–3 minutes

3. Light city driving (25–45 mph)

4. Steady cruise at 55–65 mph for 10–15 minutes

5. Gentle deceleration (no braking)

6. Stop, shut off

7. Repeat over 2–5 drive cycles

Some monitors (EVAP especially) may require:

• Fuel level between 15–85%

• Overnight cold soak

• Ambient temp within range

3. Confirm Monitor Status

Using a capable scanner:

• Check I/M readiness monitors

• When the affected monitor shows “Complete / Ready”

• And no pending or confirmed codes return

➡ The permanent code will drop automatically

This can take:

• 20–200 miles

• Several days of mixed driving

• Sometimes longer for EVAP

What Tools Work Best on Porsche

Generic scanners can show permanent codes, but these help with monitoring:

• PIWIS / PIWIS II / PIWIS III (dealer level)

• Autel MK808 / MK908 / MaxiCOM Ultra

• Launch X431

• Durametric (older Porsche models)

⚠️ Even PIWIS cannot force-clear permanent codes.

Smog Tip (Important for California)

• You can pass smog with a permanent code present

• BUT:

  • The monitor must be ready

  • No pending or confirmed codes

  • MIL must be off

This trips up a lot of sellers and dealers.

Common Porsche-Specific Gotchas

• Clearing codes repeatedly resets readiness and delays removal

• Short trips won’t clear EVAP or catalyst monitors

• Secondary air faults often require multiple cold starts

• Aftermarket exhausts can delay catalyst monitor completion

Bottom Line

You cannot manually clear permanent Porsche codes.
They clear only after the ECU proves the repair worked via successful drive cycles.

If you want, tell me:

• Year / model / engine

• Exact permanent code(s)

I can give you:

• The specific monitor

• The exact drive cycle

• Whether it will block a sale or smog inspection

Please provide your ZIP code and city name.

This is the final production year of the legendary R53 MINI Cooper S, equipped with the proper Getrag 6-speed manual transmission. Model years 2005–2006 are widely regarded as the best R53s, as they received the Getrag gearbox in place of the earlier BMW unit. The R53 is also considered by many enthusiasts to be the best U.S.-spec MINI ever produced, thanks to its supercharged engine, smaller and stiffer chassis, and raw, engaging driving experience—these cars are genuinely among the most fun vehicles on the road.

Finished in Astro Black Metallic over Tartan Red cloth / Panther Black leather two-tone upholstery.

Bone stock with no modifications.

Key features and options:

• White roof and white mirror caps

• Sport Package

• Premium Package

• Xenon headlights

• Dual-zone automatic climate control

• Harman / Kardon premium sound system

• 17" S-Lite alloy wheels

• Chrome Line Interior Package

• Power moonroof

• On-board computer

• Multi-function steering wheel

Additional details:

• Clean title

• CARFAX certified

• Two previous California owners

• California car

The Polestar 1 is available and can be viewed by appointment only. Please feel free to schedule an appointment on our website at mdk-global.com/appointment.

The Polestar 1 is available and can be viewed by appointment only. Appointments may be scheduled through our website at mdk-global.com/appointment.

Please note that test drives are offered only for serious buyers who are prepared to proceed with a purchase and have funds available.

The Polestar 1 is available and can be viewed by appointment only. Please feel free to schedule an appointment on our website at mdk-global.com/appointment.

Please note that test drives are offered only to buyers who are prepared to proceed with a purchase and have funds available or finalized financing approval in place.

Yes, you are reading that correctly—this ultra-rare 2006 CLS55 AMG shows under 30,000 miles, and it truly reflects in its condition. Everything about this CLS suggests it was exceptionally well cared for.

This is a one-year-only production model, powered by the legendary M113K supercharged V8—a proven, bulletproof powertrain known for its dual personality: refined when cruising and brutally fast when pushed.

Finished in Black over Tan leather with a beige Alcantara headliner.

Notable features and highlights:

• Harman / Kardon premium sound system

• Keyless-GO with three keys

• Power sunroof

• Xenon headlights

• Power trunk

• Rear power sunshade

• Four-zone automatic climate control

Additional details:

• Clean title

• CARFAX certified

• Two previous owners

• Service records per CARFAX report

• California car