P0017 on Porsche
Crankshaft/Camshaft Position Correlation - Bank 1 Sensor B
P0017 on Porsche vehicles indicates crankshaft/camshaft position correlation - bank 1 sensor b. Au7o has documented this code across 4 Porsche models — most commonly on 911, Cayenne, Macan. This code means the engine computer has detected that the crankshaft and the Bank 1 'B' camshaft (typically the exhaust camshaft) are out of their proper timing relationship with each other. The computer compares the crankshaft position signal to the camshaft position signal, and when they don't line up within the allowed window, it sets this correlation code. This usually points to mechanical timing being off, most often from a stretched or worn timing chain, a slipped or stuck variable valve timing phaser, or a tensioner problem. You may notice rough running, low power, rattling at startup, or a no-start, and it should be addressed promptly to avoid valve-to-piston contact on some engines. Typical repair costs on Porsche range from $3,000 to $9,000, depending on the specific model and root cause.
Common Causes of P0017
- •Stretched or worn timing chain
- •Worn or failed timing chain tensioner or guides
- •Stuck or faulty variable valve timing (VVT) cam phaser
- •Faulty VVT oil control/solenoid valve
- •Low or dirty engine oil affecting phaser operation
- •Faulty camshaft or crankshaft position sensor
- •Timing chain jumped a tooth or incorrect timing after service
- •Damaged reluctor (tone) ring
P0017 on Porsche by Model
Porsche 911(1 issue)
- Timing Chain Tensioner and Guide Failure2009-2019
The 991-generation timing chain tensioners can lose hydraulic pressure, particularly after the car has been sitting for extended periods. This allows chain slack on startup, which can jump timing and cause catastrophic valve-to-piston contact. The plastic chain guides also wear prematurely on high-mileage engines.
Porsche Cayenne(1 issue)
- Timing Chain Stretch and Tensioner Failure2008-2018
The timing chains on the Cayenne V8 and VR6 engines stretch over time, and the hydraulic tensioners lose effectiveness. On the V8, the timing system is at the rear of the engine, making repair extremely labor-intensive. Chain stretch leads to retarded timing, rough running, and eventually catastrophic valve damage if the chain jumps.
Porsche Macan(1 issue)
- Timing Chain Tensioner Failure2015-2023
The Macan V6 engines share timing chain tensioner issues with the Audi/VW EA839 engine family. The tensioners lose hydraulic pressure, allowing chain slap on cold starts. The 3.0L and 3.6L V6 engines are most affected. Progressive wear leads to chain stretch and potential timing failure.
Porsche Panamera(1 issue)
- Timing Chain Stretch and Tensioner Failure2010-2016
The 970 Panamera 4.8L V8 suffers from timing chain stretch and tensioner failures identical to the Cayenne. The V8 timing system is located at the rear of the engine, making repair extremely expensive. Progressive chain stretch causes retarded timing and rough running.
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View P0017 across all makes →Frequently Asked Questions
What does P0017 mean on Porsche?▼
P0017 stands for "Crankshaft/Camshaft Position Correlation - Bank 1 Sensor B." This code means the engine computer has detected that the crankshaft and the Bank 1 'B' camshaft (typically the exhaust camshaft) are out of their proper timing relationship with each other. The computer compares the crankshaft position signal to the camshaft position signal, and when they don't line up within the allowed window, it sets this correlation code. This usually points to mechanical timing being off, most often from a stretched or worn timing chain, a slipped or stuck variable valve timing phaser, or a tensioner problem. You may notice rough running, low power, rattling at startup, or a no-start, and it should be addressed promptly to avoid valve-to-piston contact on some engines. On Porsche specifically, this code is documented across 4 models.
What causes P0017 on Porsche vehicles?▼
Common causes on Porsche: Stretched or worn timing chain, Worn or failed timing chain tensioner or guides, Stuck or faulty variable valve timing (VVT) cam phaser, Faulty VVT oil control/solenoid valve, Low or dirty engine oil affecting phaser operation. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0017 on a Porsche?▼
Repair costs on Porsche range from $3,000 to $9,000, depending on the specific model and root cause.
Which Porsche models have P0017 documented?▼
Au7o has documented P0017 on 4 Porsche models: 911, Cayenne, Macan, Panamera.