The Quick Answer above is the generic definition. What follows is the model-specific detail for the Audi models that log P0018.
DTC/P0018·Audi
P0018 on Audi: Causes, Symptoms and Fix Cost
Quick Answer
High SeverityNot safe to driveAudi
P0018 on a Audi means the crankshaft and the intake camshaft on bank 2 are not in the correct rotational relationship. Bank 2 is the cylinder bank that does not contain cylinder 1, and because an inline engine has a single cylinder head with one set of camshafts, this camshaft code only appears on engines with two cylinder heads: V engines (V6, V8, V10, V12) and flat (boxer) engines. The ECU sees the bank 2 intake cam position deviate from the commanded angle, typically because of a stretched chain, a failed VVT solenoid or low oil pressure. VW, Audi, Skoda and SEAT apps often show this code as P001800; the last two digits are a failure-type byte.
Typical repair cost, all makes€60 - €6000
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Audi A6
2005-2024The 3.0 TFSI EA837 supercharged V6 and the 4.2 FSI V8 are the typical P0018 candidates in the A6 lineup. The 3.0 TFSI camshaft adjuster on bank 2 fails frequently around 100,000 to 150,000 km. The supercharger must come off to access the chain, driving the labour cost. Always replace both bank adjusters together.
What causes P0018 on a Audi?
Beyond the generic causes listed on the main P0018 page, these are the patterns noted for Audi models:
Audi A63.0 TFSI bank 2 camshaft adjuster failure (chronic)
Audi A64.2 FSI V8 timing chain stretch on bank 2
How to diagnose P0018 on a Audi with OBD2
Follow these steps to pinpoint the root cause of P0018:
- Check engine oil level and condition. V-engines are particularly sensitive to oil quality and pressure because both banks share the oil pump. Top up or change with the manufacturer-specified viscosity and clear the code
- Listen for cold-start rattle from the front of the engine. On V6 and V8 engines a stretched chain or worn tensioner makes a distinct 1 to 5 second rattle until oil pressure builds
- Monitor live cam phasing data on bank 2 with manufacturer-level software (actual and target cam angles are not part of the standard OBD2 data set; a generic reader shows the code, freeze frame and fuel trims). Compare actual versus commanded intake cam angle. Deviations over 5 to 10 degrees confirm a mechanical timing fault
- Test the bank 2 intake VVT solenoid. Resistance typically 6 to 13 ohms. Inspect the screen for debris. A clogged screen blocks oil to the phaser and triggers P0018
- If the solenoid is good and oil pressure is normal, suspect the timing chain or guide wear on bank 2. A workshop will need to remove the valve cover for inspection. On many V-engines this is bank 2 specifically, not both banks
How much does P0018 cost to fix on a Audi? (EUR)
Estimated repair costs for P0018 in EUR, compiled across makes. Expect Audi parts and labour towards the upper end of each range.
Prices estimated as of March 2026. Costs vary by region, vehicle, and shop.
Codes related to P0018
These codes are often seen alongside P0018 or point to related issues, on any make:
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See the main P0018 guideSkanyx · Audi
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