Key Features:

• Colored PDF format for clear visuals
• Complete wiring diagram included
• Detailed repair and diagnostic procedures
• Manufacturer-authorized service instructions

Ensure precise repairs and maintain the high performance of your Porsche 911 Carrera with this trusted OEM workshop manual.

Table of Contents : 2012-2016 Porsche 911 Carrera Repair Manual (991)

General Information

• • SALES CHECK
  • COMPLETE VEHICLE – GENERAL

Accessories & Equipment

• • RADIO, STEREO, TELEPHONE, ONBOARD COMPUTER
  • WINDSHIELD WIPER AND WASHER SYSTEM

Body & Frame

• • BODY FRONT
  • BODY CENTER, ROOF, FRAME
  • BODY REAR
  • LIDS, FLAPS
  • DOOR FRONT, CENTRAL LOCKING SYSTEM
  • BODY – GENERAL
  • SLIDING ROOF, TILTING ROOF
  • CONVERTIBLE TOP, HARDTOP
  • BUMPERS
  • GLAZING, WINDOW CONTROL
  • EXTERIOR EQUIPMENT
  • INTERIOR EQUIPMENT
  • BODY EQUIPMENT OUTSIDE – GENERAL
  • LININGS, INSULATION
  • SEAT FRAMES
  • SEAT UPHOLSTERERS, COVER
  • BODY EQUIPMENT INSIDE – GENERAL

Brakes

• • ANTILOCKING BRAKE SYSTEM (ABS)
  • BRAKES – BRAKE MECHANICS
  • BRAKES – HYDRAULIC BRAKE SYSTEM, REGULATOR

Electrical

• • ENGINE-ELECTRIC – GENERAL
  • INSTRUMENTS
  • ELECTRICAL SYSTEM – GENERAL

Engine Mechanical

• • ENGINE – CRANKCASE, SUSPENSION
  • ENGINE – CRANKGEAR, PISTONS
  • ENGINE – CYLINDER HEAD, VALVE CONTROL
  • ENGINE – LUBRICATION
  • ENGINE – COOLING
  • ENGINE – GENERAL
  • FUEL SUPPLY, CONTROL
  • EXHAUST TURBOCHARGING
  • FUEL SYSTEM – ELECTRONIC IGNITION
  • EXHAUST SYSTEM
  • STARTER, POWER SUPPLY, CRUISE CONTROL
  • IGNITION SYSTEM

Engine Performance

• • EMISSION APPLICATIONS
  • EMISSION CONTROL ABBREVIATIONS
  • FIRING ORDER & CYLINDER IDENTIFICATION
  • MODE 6
  • STATE EMISSION STANDARDS – DIESEL
  • STATE EMISSION STANDARDS – GAS

HVAC

• • HEATING
  • VENTILATION
  • AIR CONDITIONING
  • AIR CONDITIONING – GENERAL

Lighting

• • LIGHTS, LAMPS, SWITCHES, INTERIOR
  • CABLES

Maintenance

• • MAINTENANCE, DIAGNOSTICS
  • MAINTENANCE REMINDER LIGHT RESET PROCEDURES

Restraints

• • PASSENGER PROTECTION

Steering

• • STEERING

Suspension

• • SUSPENSION, DRIVESHAFTS

Transmission

• • CLUTCH, CONTROL
  • MECHANICAL GEAR-SHIFT SYSTEM – ACTUATION, HOUSING
  • AUTOMATIC TRANSMISSION – ACTUATION, ASS. HOUSING
  • AUTOMATIC TRANSMISSION – GEARS, CONTROL
  • FINAL DRIVE – DIFFERENTIAL, DIFFERENTIAL LOCK
  • POWER TRANSMISSION – GENERAL

System Wiring Diagrams

• • SYSTEM WIRING DIAGRAMS

Porsche 911 Carrera (991) Parts Catalog

• • V-Pages
  • Optional Equipment
  • Main group 0: Accessories and others
  • Main group 1: Engine
  • Main group 2: Fuel system, exhaust system
  • Main group 3: Transmission
  • Main group 4: Front axle
  • Main group 5: Rear axle
  • Main group 6: Wheels, brakes
  • Main group 7: Hand levers pedal cluster
  • Main group 8: Body
  • Main group 9: Electrical equipment

SAMPLE PAGES

2012–2016 Porsche 911 Carrera (991) – Comprehensive Guide

Overview

The 991-generation Porsche 911 (2012–2016) marked a significant evolution of the iconic sports car. It featured a longer wheelbase, wider track, aluminum-steel hybrid construction, and represented the first complete redesign since the 996. The 991 offered improved performance, efficiency, and daily usability while maintaining the classic 911 character.

Key Highlights:

• First 911 with electric power steering
• Available as Carrera, Carrera S, Carrera 4, and Carrera 4S
• Coupe, Cabriolet, and Targa body styles
• More refined, luxurious interior with improved ergonomics
• PDK dual-clutch transmission or 7-speed manual

Technical Specifications

Engine Options

Carrera / Carrera 4 (Base)

• Engine: 3.4L flat-6 (naturally aspirated)
• Power: 350 hp @ 7,400 rpm
• Torque: 287 lb-ft @ 5,600 rpm
• 0-60 mph: 4.4 seconds (PDK), 4.6 seconds (manual)
• Top Speed: 179 mph

Carrera S / Carrera 4S

• Engine: 3.8L flat-6 (naturally aspirated)
• Power: 400 hp @ 7,400 rpm
• Torque: 325 lb-ft @ 5,600 rpm
• 0-60 mph: 4.1 seconds (PDK), 4.3 seconds (manual)
• Top Speed: 188 mph

Drivetrain & Performance

• Transmission: 7-speed manual or 7-speed PDK (dual-clutch automatic)
• Drive: Rear-wheel drive (Carrera) or all-wheel drive (Carrera 4)
• Suspension: MacPherson struts (front), multi-link (rear)
• Brakes: Ventilated discs (optional PCCB ceramic brakes)

Dimensions

• Wheelbase: 96.5 inches
• Length: 177.4 inches
• Width: 71.2 inches
• Height: 51.0 inches
• Curb Weight: 3,075–3,295 lbs (depending on model)

Fuel Economy

• Carrera (PDK): 20 city / 28 highway mpg
• Carrera S (PDK): 19 city / 27 highway mpg

Top 10 Mechanical & Electrical Issues

1. Intermediate Shaft (IMS) Bearing Failure (Note: Less common in 991, more of a 996/997 issue)

Symptoms: Engine rattling, metal shavings in oil, catastrophic engine failure
Root Cause: While 991s don’t have the notorious IMS bearing of earlier models, some early DFI engine issues exist
Fix: Engine inspection, potential rebuild
Cost: $15,000–$25,000+ for engine rebuild

2. Bore Scoring/Cylinder Scoring

Symptoms: Rough idle, blue smoke on startup, loss of compression, oil consumption
Root Cause: Cylinder wall damage from insufficient lubrication, manufacturing tolerances, or aggressive cold starts
Fix: Engine rebuild or replacement
Cost: $18,000–$30,000+

3. PDK Transmission Issues

Symptoms: Rough shifting, jerking, failure to engage gears, error messages
Root Cause: Mechatronic unit failure, clutch wear, software glitches
Fix: Mechatronic unit replacement, clutch pack replacement, software update
Cost: $5,000–$15,000

4. Engine Mount Failure

Symptoms: Excessive vibration, clunking during acceleration/deceleration, visible sagging
Root Cause: Rubber deterioration from heat, age, and stress
Fix: Replace engine/transmission mounts
Cost: $1,500–$3,000

5. Coolant Expansion Tank Cracking

Symptoms: Coolant leaks, low coolant warning, overheating, coolant smell
Root Cause: Plastic deterioration from heat cycling
Fix: Replace expansion tank and hoses
Cost: $500–$1,200

6. Water Pump Failure

Symptoms: Overheating, coolant leaks, grinding noise, warning lights
Root Cause: Bearing wear, impeller damage, age-related failure
Fix: Replace water pump and thermostat
Cost: $1,200–$2,500

7. RMS (Rear Main Seal) Leak

Symptoms: Oil puddles under car, oil spots on driveway, visible oil on transmission bell housing
Root Cause: Seal deterioration, improper installation, age
Fix: Replace rear main seal (requires transmission removal)
Cost: $2,500–$4,500

8. Air-Oil Separator (AOS) Failure

Symptoms: Excessive oil consumption, white/blue smoke, rough idle, oil in intake
Root Cause: Membrane failure, clogging, age-related deterioration
Fix: Replace AOS unit
Cost: $1,500–$2,500

9. Electric Steering Rack Issues

Symptoms: Heavy steering, warning lights, intermittent assist loss, error messages
Root Cause: Sensor failure, electronic module issues, mechanical wear
Fix: Replace steering rack or control module
Cost: $3,000–$6,000

10. Battery Drain/Electrical Gremlins

Symptoms: Dead battery, parasitic drain, intermittent electrical failures, module errors
Root Cause: Failed comfort control module, door modules, infotainment system issues
Fix: Diagnose and replace faulty modules, battery replacement
Cost: $500–$3,000 (depending on module)

Top 5 Competitors

1. Audi R8 (2013–2016)

• Engine: 4.2L V8 or 5.2L V10
• Power: 430–550 hp
• Price Range: $115,000–$165,000 (new)
• Pros: Exotic looks, Lamborghini-related V10, AWD, daily usability
• Cons: Higher maintenance costs, less engaging steering feel

2. Chevrolet Corvette C7 (2014–2016)

• Engine: 6.2L V8 (LT1)
• Power: 455–460 hp
• Price Range: $55,000–$80,000 (new)
• Pros: Incredible value, powerful V8, lower running costs
• Cons: Less refined interior, cheaper materials, less prestigious badge

3. Jaguar F-Type R (2014–2016)

• Engine: 5.0L supercharged V8
• Power: 550 hp
• Price Range: $100,000–$110,000 (new)
• Pros: Stunning design, incredible exhaust note, luxurious interior
• Cons: Reliability concerns, heavier, less track-focused

4. BMW M4 (2015–2016)

• Engine: 3.0L twin-turbo I6
• Power: 425 hp
• Price Range: $65,000–$75,000 (new)
• Pros: Twin-turbo performance, practical back seats, lower entry price
• Cons: Not as special or prestigious, artificial steering feel

5. Mercedes-AMG GT (2016)

• Engine: 4.0L twin-turbo V8
• Power: 456–503 hp
• Price Range: $112,000–$130,000 (new)
• Pros: Stunning design, powerful engine, modern tech
• Cons: Less heritage than 911, newer platform (less proven), tighter interior

Top 10 Recalls, Advisories & TSB Highlights

Recalls

1. Fuel Tank Mounting Straps (2014 models)

• Issue: Straps may not meet specifications, potential fuel leak risk
• Fix: Inspect and replace fuel tank straps if necessary

2. Passenger Airbag Deployment (2013–2014)

• Issue: Airbag may not deploy properly in certain crashes
• Fix: Software update for airbag control unit

3. Engine Compartment Underbody Panel (2012–2013)

• Issue: Panel may detach and create road hazard
• Fix: Inspect and properly secure panel

4. Brake Pedal Mounting Bolt (2012 models)

• Issue: Bolt may loosen, affecting brake pedal operation
• Fix: Replace mounting bolt

5. Rear Axle Half Shafts (2012–2013 Carrera 4/4S)

• Issue: Half shafts may fracture, causing loss of drive
• Fix: Replace rear axle half shafts

Technical Service Bulletins (TSBs)

6. PDK Transmission Judder

• Issue: Vibration or judder during low-speed acceleration
• Solution: Software update, clutch adaptation procedure

7. Rattling Noise from Engine Compartment

• Issue: Heat shield or exhaust component rattles
• Solution: Inspect and secure heat shields, check exhaust mounts

8. Infotainment System Freezing/Glitches

• Issue: PCM system freezes, slow response, black screen
• Solution: Software update, module replacement if necessary

9. Sunroof Wind Noise

• Issue: Excessive wind noise at highway speeds
• Solution: Adjust sunroof alignment, replace seals

10. Paint Defects (Clear Coat Issues)

• Issue: Clear coat peeling or bubbling on certain colors
• Solution: Repaint affected panels (may be covered under warranty)

Maintenance Schedule

Every 10,000 Miles or 1 Year (Annual Service)

• Engine oil and filter change
• Visual brake inspection
• Tire rotation and pressure check
• Fluid level checks
• Multi-point inspection

Cost: $500–$800

Every 20,000 Miles or 2 Years

• All annual service items
• Cabin air filter replacement
• Brake fluid flush
• Vehicle inspection

Cost: $800–$1,200

Every 40,000 Miles or 4 Years

• All 20k service items
• Engine air filter replacement
• Spark plug replacement
• Transmission fluid change (PDK)
• Coolant replacement

Cost: $1,500–$2,500

Every 60,000 Miles or 6 Years

• All regular service items
• Brake pad/rotor inspection (replace as needed)
• Suspension component inspection
• Drive belt inspection/replacement

Cost: $2,000–$3,500+

Additional Maintenance Considerations

• Tires: $1,200–$2,000 per set (every 15,000–25,000 miles)
• Brake Pads/Rotors: $1,500–$4,000 (PCCB: $10,000+)
• Battery: $300–$500 (every 4–6 years)
• Annual maintenance budget: $3,000–$5,000

Top 10 FAQs for Buyers

1. Is the 991 Carrera reliable?

Generally yes, but it’s a high-performance sports car requiring proper maintenance. The 991 is more reliable than earlier 996/997 models, but issues like bore scoring, coolant leaks, and electrical gremlins can occur. Budget for maintenance.

2. Manual or PDK transmission?

Manual: More engaging, traditional 911 experience, slightly better fuel economy, lower maintenance costs, more collectible
PDK: Faster shifts, better performance (0.2s quicker 0-60), easier daily driving, better for track use, but more expensive to repair

3. Carrera vs. Carrera S – worth the upgrade?

Carrera S advantages: 50 more hp, larger brakes, sport exhaust (on many), better resale value, wider rear track
Cost difference: ~$15,000–$20,000 used
Verdict: If you can afford it, the S is worth it for performance enthusiasts

4. RWD (Carrera) or AWD (Carrera 4)?

Carrera (RWD): Lighter, more engaging, purist’s choice, better balance
Carrera 4 (AWD): Better all-weather capability, slightly more stable, wider body, but heavier and less pure driving feel
Recommendation: RWD unless you need winter capability

5. What should I look for in a pre-purchase inspection?

• Bore scoring (compression test, borescope inspection)
• IMS bearing condition (less critical on 991 but check early models)
• PDK transmission operation (smooth shifts, no jerking)
• RMS/oil leaks (rear main seal, valve covers)
• Coolant system (expansion tank, water pump)
• Complete service history (critical!)
• Paint thickness (accident history)
• Tire wear patterns (alignment, suspension)

6. What’s the annual cost of ownership?

• Insurance: $2,000–$4,000/year
• Maintenance: $3,000–$5,000/year
• Fuel: $2,500–$4,000/year (12,000 miles, premium)
• Tires: $1,000–$2,000/year (amortized)
• Total: $8,500–$15,000/year (not including depreciation or major repairs)

7. Should I get an extended warranty?

Yes, highly recommended for cars out of factory warranty. Quality extended warranties cost $3,000–$6,000/year but can save you from $10,000+ repair bills. Look for plans covering engine, transmission, electronics.

8. Best model year to buy?

2013–2014: More affordable, fully sorted after 2012 launch issues
2015–2016: Mid-cycle refresh, updated infotainment (PCM 4.0), improved interior materials
Recommendation: 2015+ if budget allows, otherwise well-maintained 2013–2014

9. Mileage considerations?

• Low mileage (<20k): May have issues from sitting, higher price
• Medium mileage (20k–50k): Sweet spot, properly exercised, better value
• High mileage (50k+): More affordable, but expect higher maintenance costs
• Recommendation: Don’t fear mileage if service history is excellent; proper maintenance > low miles

10. What options/packages should I prioritize?

Must-have:

• Sport Chrono Package (performance boost, better resale)
• Sport Exhaust (sound enhancement)
• Full leather interior (comfort, resale)

Nice-to-have:

• PASM (adaptive suspension)
• Sport Seats Plus (better support)
• Premium Package Plus (convenience)

Avoid overpaying for:

• Navigation (dated, use phone)
• Painted brake calipers (cosmetic only)

Final Buyer Recommendations

✅ Buy If:

• You have a $3,000–$5,000 annual maintenance budget
• You want a daily-drivable supercar with practicality
• You value driving engagement and iconic design
• You can afford a quality pre-purchase inspection ($500–$1,000)
• You’re buying from a reputable dealer or enthusiast owner with full records
• You want the last naturally aspirated 911 Carrera generation

⚠️ Proceed with Caution If:

• You’re on a tight budget (unexpected repairs can be $5,000–$15,000+)
• No service history is available (walk away!)
• Evidence of neglect (worn tires, dirty engine bay, deferred maintenance)
• The car has been tracked extensively without proper documentation
• You’re not comfortable with premium fuel and high insurance costs

❌ Avoid If:

• You can’t afford or don’t want to pay for specialist maintenance
• You need a completely reliable daily driver (get a Lexus instead)
• You’re bothered by road noise or firm ride quality
• You expect modern tech/infotainment (it’s dated by today’s standards)
• The car has had major accident damage or sketchy history

Best Value Proposition:

2014–2015 Carrera S (RWD) with:

• PDK transmission (unless you’re an enthusiast wanting manual)
• Sport Chrono Package
• Well-documented service history
• 30,000–50,000 miles
• One or two owners
• Clean Carfax
• Price range: $55,000–$75,000 (current market)

Final Thoughts:

The 991-generation 911 Carrera represents the pinnacle of naturally aspirated 911s before turbocharging became standard in 2017. It offers incredible performance, daily usability, and timeless design. However, it demands proper care and financial commitment. Buy the best example you can afford with complete service history, budget appropriately for maintenance, and enjoy one of the finest sports cars ever made.