P0018 fault code: Crankshaft Position - Camshaft Position Correlation

P0018 means “Crankshaft Position - Camshaft Position Correlation” — a fuel and air metering fault in the powertrain.

Can I DIY?

Professional-only boundary. Do not reuse a P0017 repair story for P0018; recover to a workshop.

Do not DIYReviewed page boundary
ToolsSpecialist equipment

This is the conservative boundary from the reviewed code record. This page has no frozen site-wide safety grade, so it does not publish a repair route.

What to tell the garage about P0018

Do not drive until checked. A further crank-to-cam correlation monitor has stored P0018 (Bank 2 Sensor A by SAE numbering). Same SAE short name as P0017, different sensor pair.

Take these reviewed, code-specific details with you. They help the garage confirm the fault without turning this page into a repair procedure.

  • Crankshaft Position - Camshaft Position Correlation: Registration number
  • Crankshaft Position - Camshaft Position Correlation: Exact code P0018 and any companion codes from the same scan
  • Crankshaft Position - Camshaft Position Correlation: Whether the engine management light is steady or flashing
  • Crankshaft Position - Camshaft Position Correlation: Whether P0016, P0017 or P0019 are stored on the same scan
P00xxFuel and air metering
MOT fail riskif the warning light stays on

What does P0018 mean?

P0018 is a generic (SAE standard) powertrain code reported by your car’s engine control unit. It sits in the P00xx block, which covers fuel and air metering. The stored description is “Crankshaft Position - Camshaft Position Correlation”. The code itself tells you which circuit or system tripped the fault — not always the exact part that failed.

Will P0018 fail an MOT?

A lit engine management light is a Major MOT defect until the lamp stays off. P0018 is Bank 2 Sensor A correlation, not the P0017 Bank 1 Sensor B monitor.

Before booking your test, check what usually fails on your car: see our MOT pass rates by make and model, built from 33.1 million DVSA tests.

Related guides

Car diagnostic test cost: compare the scopeUK booking marketplaces currently publish diagnostic averages of about £52–£65. Engine management light on: steady or flashing?A steady engine management light means the computer has stored a fault. Drive with caution and get the code read. A flashing light is different — stop when it is safe. Timing-chain replacement cost: confirm the evidenceNoise or a correlation code alone may not prove chain wear; ask what tests and complete-kit scope support the quote.
P0001Fuel Volume Regulator Control Circuit/Open P0002Fuel Volume Regulator Control Circuit Range/Performance P0003Fuel Volume Regulator Control Circuit Low P0004Fuel Volume Regulator Control Circuit High P0005Fuel Shutoff Valve 'A' Control Circuit/Open P0006Fuel Shutoff Valve 'A' Control Circuit Low P0007Fuel Shutoff Valve 'A' Control Circuit High P0008Engine Position System Performance

P0018 — quick answers

Is it safe to drive with P0018?

Do not drive until checked. We have no verified driving guidance for P0018. Treat as do not drive until checked. Bank 2 Sensor A disagreement is not a copy-paste of P0017.

Will P0018 fail my MOT?

A lit engine management light is a Major MOT defect until the lamp stays off. P0018 is Bank 2 Sensor A correlation, not the P0017 Bank 1 Sensor B monitor.

Fault-code identifiers are standard diagnostic facts. Their explanations and diagnostic guidance on this site are original editorial summaries, not reproduced SAE wording. MOT defect rules reflect the DVSA MOT inspection manual (2026). This page is general guidance for UK drivers, not a substitute for a professional diagnosis.