P0018: Crankshaft Position - Camshaft Position Correlation (Bank 2 Sensor A)

P0018 means the crankshaft and the intake camshaft on bank 2 are not in the correct rotational relationship. Bank 2 contains the cylinder not housing cylinder 1, so this code only appears on V-engines and some inline engines with multiple banks. The ECU detects the bank 2 intake cam position deviates from the commanded angle, typically due to a stretched chain, failed VVT solenoid, or low oil pressure.

P0018 è un codice diagnostico di guasto relativo a accensione, classificato con gravità high. Quando la centralina (ECU) del tuo veicolo rileva questa condizione, memorizza P0018 e accende la spia motore.

Se il tuo veicolo ha attivato P0018, potresti notare uno o più di questi sintomi:

• Check engine light illuminated
• Rattle from the front of the engine on cold start (especially on V6/V8)
• Rough idle and possible misfire on bank 2 cylinders
• Hard starting, particularly when the engine is warm
• Reduced power and hesitation under acceleration
• Increased fuel consumption

Ecco le cause più comuni di P0018, ordinate in base alla probabilità che siano la causa del problema:

No, risolvi subito il problema. Drive only short distances to reach a workshop. P0018 is a bank 2 (typically intake cam) correlation fault, meaning your engine is a V6, V8, V10, or V12. Continued driving with a stretched timing chain risks bending valves on interference designs.

Segui questi passaggi per individuare la causa principale di P0018:

1. 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
2. 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
3. Use a scan tool to monitor live cam phasing data on bank 2. Compare actual versus commanded intake cam angle. Deviations over 5 to 10 degrees confirm mechanical timing fault
4. 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
5. 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

I costi di riparazione di P0018 variano a seconda della causa principale e del tuo veicolo. Ecco le stime tipiche:

P0018 si comporta in modo diverso a seconda del tuo veicolo. Seleziona la tua auto qui sotto per cause specifiche del modello, problemi noti e stime dei costi adeguate:

Questi codici compaiono spesso insieme a P0018 o indicano problemi correlati: